Roto Grip Duo Review

Roto Grip’s most iconic line has another new piece coming to it. The Roto Grip Duo features the brand new Mentor Core that yields an RG of 2.49 and differential of 0.046 and is wrapped around the ultra popular microtrax pearl cover. I drilled mine 5.5 x 5 x 5 which is also the same layout as my Exotic Gem. After throwing my Duo for awhile, I was quite impressed on the strength and shape this ball gave me. It was like a little clean benchmark type motion or a better comparison would be a baby Exotic Gem. I can see a lot of people using this as a multi purpose ball. They could either use it on the fresh as a benchmark ball or something as the lanes start to transition. Also Storm is donating 5% of all sales of the Duo to the Big Brother, Big Sister Foundation!

United States

We have a new ball plugging the gap in our arsenals with the new Duo from Roto Grip. This ball is a perfect benchmark pearl for those medium to heavier oil conditions. A step up from both the Zen and IQ Ruby yet a step down from our Exotic Gem. Out of the box I found the cover to be clean through the fronts and smooth off the backend. When I hit it with 2000 the ball picked up much sooner conspicuously yet it angled a lot better than when I had it out of the box. When the higher end asyms or solid syms become too much the Duo will be a great ball to jump into. We have not seen a ball like this since the Idol pearl and Axiom pearl. The shape that the Duo provides is extremely user friendly and will provide tons of margin on today's conditions. The ball is very forgiving and should match up to many bowling styles. I believe this ball will be very adaptable to different lane conditions from sport to house.

United States

Ball review: DUO Layout: 50x4 1/2x30 PAP: 4 1/4> 1/8^ Today we have the new DUO from Roto Grip. The latest entry into the HP3 line. Roto Grip had partnered with Big Brother/Big Sister with the release of this ball by donating 5% of sales to aid in the development and support in the BB/BS program. This is a great opportunity for you to make a difference in bowling and outside of bowling with the same purchase. The DUO has the new Mentor core wrapped with the Microtrax Pearl coverstock, previously on the Exotic Gem. This is a good Step down from the Exotic Gem. I have compared the DUO to my Storm IQ Tour Ruby which I laid out the same way and the Ruby was much cleaner through the fronts where the Duo was more midlane roll. Both these balls is a stable in my bag and a good 1-2 combo for medium lane conditions The Roto Grip DUO is available at your local VIP Storm proshop World Class Pro Shop on May 19th. Be sure to pick yours up!! Come see me #WORLDCLASSPROSHOP #stormnation #SquadRG #WAWG #DUO #RFA https://youtu.be/TWbr4nOoKuc

United States

Wow! This ball is awesome. I don't have a lot of speed, and this ball still hits hard, great finish.

United States

The Roto Grip DUO features the MicroTrax Pearl Reactive cover, Mentor Core, and comes with the reacta gloss finish. The DUO features the same cover that is on the Exotic Gem. This ball feels like a symmetrical Exotic Gem to me. It shapes very similar but just a bit weaker from the core. I threw the Exotic Gem as a comparison and it was a bit earlier and harder off the spot for me. I also compared it to the Zen and the Zen picked up a touch earlier but was smoother/rounder off the spot. The DUO, for me, is forward off the spot and when it sees friction, it goes left. I think when you need something when the Exotic is picking up too early the DUO will be a good ball down. This ball is another great release from Roto Grip! Tobias Myers #RotoGrip

United States

Dual Angle Layout: 55 x 4 ½ x 25 Pin Buffer Layout: 4 ½ x 4 ½ x 1 5/8 Dare I say this is the Zen 2.0? I put the same layout on the Duo as I did my original Zen and if it was not for the awesome color scheme I would not be able to tell the difference. This ball is clean through the heads, picks up nicely in the mid lane, and really pops off the end of the pattern. Plus 5% goes to the Big Brother Big Sisters, I’ll take a 2nd one for sure.

United States

Duo • Roto Grip •HP3 Core • Mentor Core (Symmetrical) Coverstock • MicroTrax Pearl Reactive • Finish Reacta Gloss Weight • 15 lbs. RG • 2.49 Differential • .046 Layout •4 x 4 x 2 ¼ Tester PAP • 5” R, 5/8” D Tester Axis Tilt • 11° Testers Rev Rate • 300 Test Pattern • 42' THS (Typical House Shot) • Modified, Kegel Stone Street Are they helping the next generation? Roto Grip is doing precisely that with their release of the Duo. Partnered with Big Brothers and Big Sisters, your Duo purchase will not only be helping the next generation, but your Duo will also bring a smile back to your A game! You will love it, especially if you are a down-and-in player like me! So, let's take a closer look at what makes the Duo worth the purchase! The Mentor Core is at the heart of the Duo's success. I like how the Mentor Core's symmetrical "mushroom" look produces a smooth and robust rev'ing motion later in the mid-lane versus rev'ing too early upfront, causing it to lose all its gusto down the lane. And if you're a straighter player like me, you will love the results of the puck block added to the bottom of the Mentor Core. The puck block helps the Mentor Core stand up later as it makes its turn off the pattern. And because it doesn't overreact when it finds friction, the Mentor Core creates a dependable margin of error the Duo can recover from while still maintaining a strong continuation through the pins. So, if you're a down-and-in player who likes to play right of the second arrow, then the Mentor Core was made for your game! The MicroTrax Pearl Reactive Coverstock gives the Duo an excellent appeal. However, I am a proponent of the correct surface to match the bowler. So, I tweaked the surface of my Duo to 1000-Grit Abralon and followed that up with Storm Step # 2 compound for my straighter, rev-challenged hand. And this surface combination brought my A game to a fun and high-scoring bowling night. I liked how the MicroTrax Pearl had strong traction in the mid-lane but still allowed the Duo to retain a lot of energy off the pattern. And as the night went on, I liked how the MicroTrax Pearl smoothly blended the over/under conditions that developed throughout the night without losing its crisp turn-off pattern. And lastly, the MicroTrax Pearl allowed me to stay in my comfort zone all night as it gave me the confidence to play right of everyone else! In conclusion, Roto Grip has produced a winning release with the Duo. The Duo is a predictable and consistent powerhouse for my straighter and more classic game. So, I highly recommend the Duo to any down-and-in, low-rev bowler looking to boost their game. And what better way to improve your game than by helping the Big Brother, Big Sister Organization make a difference to our next generation with the purchase of your Roto Grip Duo! So, stop into your local Storm VIP Pro Shop today and see how everybody wins with the purchase of Roto Grip Duo! Rick Klimowicz Storm Products Pro Shop Staff Roll the Ball Pro Shop Penndel, PA

United States

The Duo is a a collaboration between Roto Grip, Big Brothers Big Sisters, and the Shafani Duo. The all new Mentor Core (named after those who are Big Brothers/Sisters) is wrapped in MicroTrax Pearl coverstock that has been featured as recent on the Exotic Gem. I drilled by Duo 4.75x4x4 2LS to help me get a consistent roll off the spot and see a strong smooth reaction. I have this same layout on my Fate and my Phase V, and I see 3 very different shapes of ball reaction. The Duo is considerably more forward off the spot and reads the midlane the earliest out of the three. The Fate is the strongest and has a much more continuous backend motion. The Phaze V goes easily 3-4ft more down lane before it starts to pick up and drive towards the pocket. The Duo is going to be filling the same spot in the bag as my Zen as it is quite possibly even more controllable. The Duo wants to pick up in the midlane a touch sooner than my Zen has in the past and is stronger on the backend. If you need something that is as good looking on the lane as it is off the lane, then the Duo is right for you. I will not often say that everyone needs a certain ball in their bag, but the Duo might just make that case for me. Visit your Local Storm VIP Proshop today to make a difference on and off the lanes with the Roto Grip Duo.

United States

Roto Grip Duo Coverstock: Micro Trax Pearl Reactive Finish: Reacta Gloss Core: Mentor Core (14 pd) RG: 2.53 Differential: 0.047 Layout: 5.5 x 4 x 4 - 2LS Layout Extras: 2 1/8 Finger Depth, "X" - 4 1/2 D and 1 Inch Left Tester: PAP 6 1/2 R, 1 1/4 D Review: The Duo reunites with the daredevil series from awhile back. The goal of the Duo is to provide a controlled reaction in a pearl coverstock. Previously, some pearls have created to much "hockey stick" reaction which can place a bowler at a disadvantageous position when balling down. The Duo quite nicely provides some forgiveness in the RG line. For a pearl offering, the Duo provides a decent amount of length and smoother backend. I personally chose a 2LS layout of 5.5 x 4 x 4 to gain a touch more length and slightly more backend. The layout we chose on the Duo tested out nicely. For me, the Duo oob pearl surface was perfectly fine. However, I tend to always lightly touch pearls with a 4K or 3K pad. Although not always needed, it is a personal preference of mine. The Duo felt comfortable and had great control off the spot and shots have been repeatable. In comparison, the Cosmos is earlier and a tad smoother downlane. The Duo fits nicely if you need a touch more pop when the Cosmos starts getting a bit early as transition occurs. Having the Duo can be a great asset to be in a pearl that allows you to keep angles in front of you and control at the breakpoint. However, I do need to note my Cosmos is 15pd and my Duo is 14pd, so the numbers are a bit different when evaluating both balls. Also, don't forget when you purchase your Duo you are supporting Big Brothers and Big Sisters as well. Please be sure to visit your favorite pro shop today or https://youtube.com/channel/UC1VA-MgFBo9mIZde-G3T11A for more information. Michael Slatky 900 Global Staff Member York, PA

United States

The New Duo from Roto Grip features the MicroTrax Pearl Coverstock and the Mentor Core. When it first went down the lane, I was amazed. It stores so much energy to make crazy angles downlane. I compared it to the Zen; The Zen was a little earlier and smoother down lane. They are definitely compliments to eachother. The Duo is a ball for everyone who likes that big hook downlane. Go get yours! Ethan Fiore ⭐PBA Member⭐Roto Grip Staff⭐CoolWick Staff⭐Tournament Director⭐ Right 2 Handed Rev Rate: 500 Speed: 17.5 PAP: 4 1/8 up 7/8

United States

Roto Grip DUO: Tech specs: New Mentor core / Micro Trax Pearl Reactive / Finished with Reacta Gloss Layouts: 60 x 2 x 40 and 70 x 4 x 30 My take: Drilling the DUO with a layout I love in my Roto Grip Hyped Hybrids – YES – that is PURAL, and Hyped Pearl, the reaction I saw was earlier and stronger then what I was anticipating even on Pro Lane with a heavier volume house pattern, the motion in all three stages were quicker in response. Even if I got in really deep – nose bleed area for my lefties of my caliber of game, the flare amount look like it had a strong 4” pin drilling. So at the recommendation of Earl Burger at ABC North in Harrisburg, we layout and drilled my second DUO at 70 x 4 x 30 and what a difference that made. The 2nd DUO became more predictable for the conditions that I bowl on and gave me the “look” I was hoping for. The roll through the pins was AWESOME and my first 5 games with the 2nd DUO were all 30 pins above my average. Anytime a ball can help you improve your average and game – its worth the investment. THE BEST thing about this ball is the purpose behind it – To raise awareness and money for Big Brothers / Big Sisters because a portion of EVERY DUO sold goes to them. Why not buy one or a DUO of them and improve your game and HELP OUT kids also – it is a WIN – WIN situation.

United States

DUO - Ball Specs Color: Black/Electric Green Cover Stock: Micro Trax Pearl Reactive Finish: Reacta Gloss Core: Mentor Core RG: 2.49 Differential: 0.046 Review Roto Grip is proud to announce its partnership & support of Big Brothers Big Sisters. With the assistance of our very own mentoring duo, “The Shafanie Duo”, we will not only be supporting BBBS at various events across the country, but we will also be donating 5% of our sales to domestic distributors to aid in the development and support of children within the program. So, if you are looking to make a difference both ON and OFF the lanes, then the DUO is the right choice for you. The DUO is the newest ball in the Roto Grip HP3 line. Roto Grip has combined the mentor core wrapped with the Micro Trax Pearl cover. The DUO is a little cleaner than Idol Cosmos, which allows me to play further to the right and stroke the ball. The DUO reads the midlane well with a strong reaction on the backend. This ball will be great for the second to third game of league. This ball will be in my bag for league and tournaments. Order one from your local pro shop today! My ball review videos are posted on YouTube channel Stanley Waite. Stanley Waite 900 Global Staff Member Dover, DE

United States

Roto Grip Duo Coverstock: MicroTrax Pearl Reactive Core: Mentor Factory Finish: Reacta Gloss Layout: 4 x 4 x 2 The Duo is Roto Grip’s new HP3 line release. First, it is important to note that 5% of the sales of the Duo will be donated to Big Brothers Big Sisters to aid in the development and support of children. HP3 is generally in the benchmark range of balls. In the Duo, we have the Exotic Gem coverstock (MicroTrax Pearl) and the Mentor core inspired from the Daredevil series from a while back. I do like my Exotic Gem, but sometimes the window of use is small for me because it is very strong and that leads to bad carry when it starts to stand up a bit too early. But, in the Duo we have a core with a larger zone of use that matches up well with the MicroTrax Pearl cover. I find the Duo to be the perfect transitional ball after the Exotic Gem. It slots in right before I go to my IQ Tour Ruby as the Ruby is about an arrow weaker and stair steps off the Duo very well. I think the Duo will match up for many styles of bowlers looking for an all around good ball to cover a variety of lane conditions encountered in league and tournament bowling. Chris Freeland Storm Amateur Staff Average Rev Rate 400 Average Speed 18 mph PAP: 4 1/8 over 3/4 up

United States

https://youtu.be/j0tT85OsMXQ Ball review: DUO Layout: 50x4 3/8x35 PAP: 4 3/8> 1/2^ Today we have the new DUO from Roto Grip. The latest entry into the HP3 line. Roto Grip had partnered with Big Brother/Big Sister with the release of this ball by donating 5% of sales to aid in the development and support in the BB/BS program. This is a great opportunity for you to make a difference in bowling and outside of bowling with the same purchase. The DUO has the new Mentor core wrapped with the Microtrax Pearl coverstock, previously on the Exotic Gem. This is a good Step down from the Exotic Gem. I have compared the DUO to my Roto Grip Exotic Gem, On fresh THS I can start with my Exotic Gem and ball down to my Duo which is cleaner through the front and smoother downlane. these balls is a great addition to my bag and a good 1-2 combo for medium to heavy lane conditions The Roto Grip DUO is NOW available at your local VIP Storm proshop World Class Pro Shop Be sure to pick yours up!! Come see me #WORLDCLASSPROSHOP #stormnation #SquadRG #WAWG #DUO #L1

United States

Coverstock: Micro Trax Pearl Reactive Core: Mentor™ symmetric core Finish: Reacta Gloss Factory Finish RG: 2.53 (14lb) Differential: 0.047 (14 lb) Right-Handed Tweener Speed: 12-13 mph Rev Rate: 315 Axis Tilt: 14° Axis Rotation: 74° PAP: 5 1/8 R 7/8 Up Ball Layout: Pin over Bridge 5 1/8 Pin to Pap 2 1/2 Pin Buffer Roto Grip's New HP3 offering is called the DUO. They've used the Micro Trax Pearl ball that was featured so successfully on the Exotic Gem with a new core called Mentor. This bulby core shape is a throwback to balls like the Dare Devil. It gives the HP3 line a ball that I feel gives you a more noticeable difference from the HP4 line than the Idol series did. The Duo is also a collaboration with the "Shafanie" duo of Shannon Okeefe and Stephanie Johnson and with an organization that they are very close to: Big Brothers/Big Sisters. The result of this collaboration is Storm Bowling has pledged a portion of every sale of a duo to Big Brothers/Big Sisters. So getting a great performing ball and also helping a great cause should be good selling point for the Duo. I tested the Duo on the house pattern at my home center. While our pattern is on the longer side, the added heat of summer makes the lanes hook ALOT more than they do in the winter. I was worried about the Duo's strength after my experiences with the Idol series balls when the oil seems to sit so thin in the heat. The Duo however has proven to be much more useful. The microtrax pearl cover will get through the front of the lane and the higher RG mentor core doesn't cause the ball to burn up. What you get is a good strong backend reaction that isn't so violent that you can't control it. The advantage to this is that small misses don't leave you with unmakeable spares the way the really angular balls do. So while the Duo will clear all the early friction, it retains energy and gives you a strong, controllable roll down lane. I really like this reaction when I'm forced left and have to cover boards. The Duo is strong enough for me to use first ball out of the bag on the current conditions. In the winter I would see it being more useful when some friction develops down-lane. See my full ball reaction video at: https://youtu.be/reqfxv_qIu8 Lonnie Pemberton Storm Pro Shop Staff Vise Pro Shop Staff Revolutions Pro Shop

United States

Ball Specs: Storm Summit Coverstock MicroTrax™ Pearl Reactive Weight Block Mentor™ Core Color Black / Electric Green Finish 1000 grit Step 2 Layout 40x3 5/8x70 or 3 5/8x4x3 5/16 Bowler Specs: Right Hand. PAP 3 11/16 Over 11/16 up Rev Rate 350 Speed at release 17.5 Review: The Roto Grip Duo is the latest release in the HP3 Line. With this ball Roto Grip is partnering and supporting Big Brothers Big Sisters and will be donating 5% of ball sales to the program. The Duo is wrapped in the MicroTrax pearl that was found on the Exotic Gem. The core is a new core to the line with the Mentor core. What I found with this ball is a heavy rolling clean pearl that is great from straight but also isn’t afraid of getting deep. I modified the surface to 1k and step two just to cause the ball to read a couple of feet sooner and slow the reaction downlane. This is a great compliment to an Exotic Gem and step down. If you had a Dare Devil and loved it this is going to be the ball for you. Get yours today at your local Storm VIP pro shop. Alex Thomes #StormNation #StrikingWorldwide #SquadRG #Driven2Bowl

United States

I have enjoyed my purchase. I am a repeat customer. I have been bowling really well since getting the ball.

taiwan

Roto Grip DUO Layout: 5 x 5 x 2 Storm Pin Buffer Layout Rev Rate: 325 rpm, 7 degree of axis tilt, 40 degree of axis rotation Testing information: 41 foot THS (medium to light volume) Bowling Center: Fulton Bowling Center Kegel Machine – Brunswick Anvilane The Roto Grip DUO combines the Mentor Core and MicroTrax pearl cover. We tested with the factory Reacta Gloss finish. The DUO had some DareDevil vibes to it. The DUO will be a step down from the .0050+ Diff bowling balls when they start to burn up early. The DUO’s overall hook was a little less than one of my favorites and a ball that shares the MicroTrax cover - the Exotic Gem. Visit your local Storm VIP Pro Shop! #Stormnation #SquadRG

United States

The Duo is the newest strong symmetrical pearl ball in the lineup. The combination of the low RG and strong coverstock make this ball very smooth for a pearl ball. I find that the shape is very even and readable. This ball reminds me somewhat of a Zen, due to its heavy rolling nature and slower change of direction. I think overall the Zen is still stronger. While i can often start with the Zen game 1, i have found Duo to be better as a 2-ball or transition piece. If you are speed dominant or have higher tilt/rotation, this is a great pearl option because it revs up quickly and creates a smoother transition from skid to hook to roll, but still creates some length through the middle part of the lane. Chase Valenzuela

United States

I drilled my Duo (5 x 4 x 2 ¾). The ball is amazing. I can play up the lane or get left depending on the condition. Before drilling the ball, I was told that this was going to be something like the Disturb which is one of my all-time favorite balls. After throwing it a couple times It reminds more of a wrecker/disturbed mix. The ball reads and still gets down lane but never misses the hook spot. The colors are great especially when the ball is spinning down lane. I don’t say this much but there is nothing in the line currently with this shape.

United States

Roto Grip Duo Layout: 4 ½ x 4 x 3 Pin Up Bowlers PAP: 4 13/16” Over 11/16” Up Rev Rate 400 Rpm Unleash Dual Power and Control with the Roto Grip Duo Bowling Ball! I recently had the opportunity to test out the Roto Grip Duo bowling ball, and I must say, it's a fantastic addition to any bowler's arsenal. The Duo combines the perfect blend of power and control, offering a versatile and impressive performance on the lanes. First and foremost, the Duo features the unique Mentor Core, from its mushroom/bulb shape structure to the heavy density flip puck on bottom, (to give it extra giddy up) this part was constructed to deliver added forgiveness in the back part of the mid-lane and down lane where you need and want it most. To be perfectly honest, this latest addition to the HP3 family of cores was erected and developed from the inspiration of the Madcap™ Core numbers (DareDevil™ Series) from yesteryear. The result is a ball that offers an excellent combination of power and continuation down lane. The Mirco-Trax pearl reactive cover stock of the Roto Grip Duo further enhances its performance. This cover stock provides a perfect balance between traction and length, allowing the ball to read the lane with precision and maintain energy for a explosive entry into the pocket. The ball's strong mid-lane read and sharp backend reaction make it suitable for medium to medium heavy oil conditions. The Roto Grip DUO has been one of my favorite pieces in my bag in a long time and what is even better is roto grip donates 5% of sales to Big Brothers Big Sisters Foundation, a amazing reason to add this ball to your arsenal. Whether you're a competitive bowler seeking a versatile ball for tournaments or a casual player looking for a reliable and high-performance option, the Roto Grip Duo won't disappoint. Unleash great power with the Roto Grip Duo bowling ball! #stormnation #SquadRg #strikingworldwide #kosproshop

United States

The duo was a complete surprise to me. The combination of the low RG and relatively strong coverstock creates a smooth rolling pearl. I have found a lot of success on house shots and medium length sport shots. Also, the colors are amazing!

United States

The Duo features the new low RG symmetric Mentor core inspired by the Madcap core from the DareDevil series which comes in at a 2.49 RG and a .046 differential in 15 pounds, and is wrapped in the MicroTrax Pearl cover which comes out of the box with the Reacta Gloss factory surface. The Duo is a remarkably versatile ball at a virtually perfect strength for most league bowlers. It’s surprisingly clean and sharp considering it shares the cover from the Exotic Gem, and is somewhat directional. You can get it to stop and go forward if you want, or you can get it to be very continuous. It’s a nice blend between user friendly and forgiving and a very high amount of utility that makes the Duo a ball that gets better the better you are. The shape reminds me a lot of a Wrecker but stronger, somewhat tumbly, not quite chuggy, and somewhat hook/set.

United States

I’m always impressed with my purchase from bowlers Mart, every purchase I have made is not only timely but exact. I will not purchase products from anyone else. The ball is amazing exactly what I was looking for. I dropped down to 14lbs so I could really focus on improving my accuracy, ball swing, and getting under the ball for my release. The reaction on the lane is perfect as I am able to shape the ball more and control my ball speed to let the ball do its job. I’m more than happy with this purchase!

CA, United States

The DUO is a reaction shape that was extremely welcome to my bag. It's an earlier shape that rolls throughout the entire body of the lane. I drilled mine 2x5 3/4x1 and left the box finish on the ball. It's a strong, even, continuous shape that is not at all violent at the breakpoint, but extremely predictable and reliable. I found that I didn't have much miss room to the left of my target down the lane, but lots of room and recovery to the right. The 2.49 RG gets it started and the .046 differential is what keeps it stable and predictable throughout the lane. Some people have compared it to the Zen but for me it's a little earlier and a little slower down the lane than the original Zen. I have the most success with it playing in or left of the track area and giving it some room to do it's thing. ALSO, 5% of every sale benefits Big Brothers Big Sisters, which is something that everyone can support!

United States

The Roto Grip Duo with the Exotic Gem coverstock is such a great combination! This is my strongest pearl symmetrical ball in my bag. The layout is 4x4.5x2.5 which puts the pin up and a little to the left of my ring finger. Out the box the surface made the ball a lil too clean for me and at times too flippy with the reacta gloss polish so I used a 3000 abralon pad to knock off the shine and brought the ball to life. It has been a great ball for the fresh for me with the 3000 surface. On the Kegel Route 66 pattern it worked well on there. With that pattern you can’t get it out past 7-8 so to keep it more of a tighter line with a breakpoint around 10 11 down lane the Duo played perfectly! For my game this is probably the strongest symmetrical pearl from Roto Grip I have thrown. This will be a great ball for league bowlers and when you need something on a sport pattern for transition. Garrett Richardson Storm Amateur Staff Instagram: @grich_bowling

United States

Patterns: Length: 41' Volume: 25.79 Sport Pattern: Arsenic THS: 42' Coverstock: Micro-Trax Pearl Reactive Core: Mentor™ symmetric core Finish: Reacta Gloss Factory Finish RG: 2.49 Diff:0.046 Layout: 4 1/2 x 4 7/8 x 1 5/8 Duo: the ultimate control pearl when I need to ball down from my Zen. Early rolling core with less flare with the ability to turn the corner. I find the carry percentage is equal to my Zen as I have used on various THS conditions and the 41' Arsenic. I have not altered the cover as I like to test a ball based on the intended ball expectations and I have not been disappointed with my results. Bowling mostly on THS the Duo is very user friendly for all styles for it has that extra giddy up and go reaction typically liked by your everyday house bowler. CONTROLLABLE: I prefer this shape for both tournament and league to be the ultimate in versatility. Looking forward to its use after a year long injury recovery. So Visit your local VIP Pro Shop and get yourself a Duo aka “The Shafanie Duo” Likes: Controllable

The Duo features the Mentor core wrapped in the Micro Trax pearl. The Mentor core is a lower RG and medium differential core. The Micro Trax cover has most recently been featured on the Exotic Gem. This combo provides a perfect cleaner option that will fit right below your bigger symmetrical options and right above your Electrifys and IQ’s. 5% of all sales are also being donated to BBBS, so what’s not to love?? Review Video: https://youtu.be/8HgQWQOtR

The Roto Grip Duo is the new ball in the HP3 line. Duo features the new low RG symmetric Mentor core. Which is wrapped with the MicroTrax Pearl cover, which is the same coverstock as the Exotic Gem. I drilled mine with a 4.5x4x2 layout. I tested the Duo on an 20+ year old Brunswick Pro Anvil lanes, on house shot and a couple medium patterns. The Duo gets through the fronts pretty good and has a lot midlane rolly shape for me and can get a little forward at times if there isn't enough oil. I can see me using the Duo on the fresh to blend out the backends. Plus I can use the Duo on the short patterns like Cheetah, to control the overall shape of the pattern. I think Duo is going to be good for the average league bowler as it can handle the miss lefts in the puddle and the miss rights to the dry and it doesn't over bounce. Duo is a good ball down from the Gem's or reality. Cleaner than a Phaze 2 or TNT. Overall the Duo is a strong symmetrical pearl that can be used by a variety of bowlers! Plus a percentage of domestic sales goes to Big Brother’s and Big Sisters. Thanks for Stephanie Johnson and Shannon O'Keefe! for the support of the Duo! Brian Watson Storm Pro Shop Staff PAP 3 7/8 up 1 1/4 RPM 400 MPH 16 TILT 16-17

This ball reminds me of the Zen with its shape, heavy rolling and not very quick to change shape down lane. I still find the zen to be a touch stronger but this would be a great transition ball! I can see my self using this at our center late game one into game two!

The new Duo made by Roto Grip is the latest addition to the HP3 line and it’s impressive. With flashy, bright green shelf appeal, this ball also packs a punch. With an RG of 2.49 and a differential of .046, the Duo can be used by all types of players and on many different conditions. The Mentor Core is an upgrade from the old DareDevil that was made from Roto Grip years ago. The brains in Utah added a puck on the bottom of the core to enhance the motion down lane, and it definitely does that! I’ve drilled one Duo so far and really like it. I mapped it out as 5 1/4 x 4 1/2 x 2. This puts the pin above my bridge with a slight shift of the CG. It’s been a perfect compliment to my Gem, Exotic Gem, and TNT. Once those balls have done their job and I need something to get through the front but still dig, change direction, and still run over the 8-pin, the Duo is the ball I use. In most situations, I’m sliding left of 25 and curving it a good amount because that’s where I’ve seen the most success, but I’ve also seen the straighter players with lower rev rates use it to play farther right away from the traffic. If you need a ball that packs a punch, looks great going down lane, and can be usable for all types of styles and rev-rates, the Roto Grip Duo should be the next ball you drill.

The Roto Grip Duo was anticipated as a Zen like replacement ball, and while I feel like we get close to that but it is definitely something different. For me the Duo is still one of my cleaner options but on the stronger side of that spectrum being that it has MicroTrax Pearl on it, one of Roto Grip’s stronger pearl covers. My Duo has been a great option at home on the house shot but starts to struggle more when I have to get super steep with my angles. A touch earlier for me than a Zen, it becomes more forward at the end of the lane, and that’s where it struggles to create those steep angles. Otherwise a great ball for the majority of league night for me! And don’t forget, 5% of the sales of this ball go towards big brothers and big sisters of America!!! Coverstock: MicroTrax Pearl Reactive – Reacta Gloss Core: Mentor Core RG: 2.49 - Differential: .046 (15lbs) Layout: 5 x 5 x 4 Pap: 4 7/8 Right, ¼ up Rev Rate: +-500 Speed 17-18mph Brian Locke – Storm Amateur Staff

Sam C.-Roto Grip Amateur Staffer High Speed-High Rev Layout: 60×5 1/4″x40 The Baby Exotic Gem. With this ball having the same cover stock as the Exotic Gem it has no problem hooking with that being said it needs some oil. Not to mention the colors of this ball just look sweet going down the lane. This pearl ball is strong in the oil and does not go wild on the back end. I would describe the shape as more of an aggressive yet controllable arc. Comparing it to the 900 Global Zen they have similar hook potential. The difference between the two I feel is the Duo with the medium strength core “floats” or does not rev up as early when it sees the friction. To me this ball is a step down from the stronger balls like the Gem or Exotic Gem but a step up from a Storm Revenant or Absolute. Not to mention this ball supports a great cause Big Brothers and Big Sisters!

The new Roto Grip Duo is the result of a partnership with Big Brothers, Big Sisters. A portion of all sales of the Duo will go to this charity. The Duo features the Mentor core wrapped in the MicroTrax pearl reactive coverstock. The RG at 15lbs is 2.49 and the differential is .046. Drilled at 5x4x2 (pin above the bridge) the Duo reminds me of the original DareDevil, only smoother. The Reacta Gloss finish of the Duo provides effortless length through the front part of the lane and a very strong but predictable backend motion. For a pearl coverstock, this ball does not have that hockey stick shape backend but a much more arcing motion usually found in solid cover stocks. This allows the Duo to be a great choice on the tougher patterns when control is priority number one. The Duo won’t wow you with big backend hook or even overall hook, but it will control the pocket for you and provide excellent pin action. Get a great ball and help a great charity!!

I drilled up my Duo 5 x 4 x 3. This is my favorite layout for first out of the bag pearl balls. I hit the surface with a light 2000 to crack the shine and smooth the reaction out. I put the DUO up against the SUMMIT and pin under EXOTIC GEM. Just like you would expect, the DUO is dead in the middle of these two. A little later than the SUMMIT and quicker than the pin under EXOTIC. The DUO was at home for me on a middle pattern and flared around 4-5". I feel that the DUO will get play as a first ball out of the bag at places with some early friction burn in the fronts and also when the big solids are starting to lock up and lay flat down lane.

Layout: 50 x 4 ½ x 35 The Duo has about as strong of a late midlane/backend reaction as you can have without it being classified as “skid flip”. The decent amount of midlane read that the Duo has both allows it to have a modicum of predictability and arciness, but overall, this thing can really fly in the back part of the lane! It has become my favorite ball for when strong backend is needed, especially on house shots. I've paired the Duo with the Summit to be a killer combination – the Summit shines on fresh or heavier oil, and the Duo comes out when the Summit starts to pick up too early or when I need to circle the lane more. The bright green and black color combo on this ball is really nice, also.

Roto Grip Duo Coverstock: MicroTrax Pearl Reactive Box Finish: Reacta Gloss Core: Mentor Core RG: 2.49, Diff: 0.046 (15 lbs) VLS Layout: 4 3/4 x 4 x 2 1/2 Dual Angle Layout: 45 x 4 3/4 x 40 PAP: 5 3/16” right x 5/8” up Rev rate: 400 rpm Average speed: 16.5 mph Location: Prairie Lanes, Sun Prairie, WI Pattern: Medium volume THS The Roto Grip Duo is the recent addition to the HP3 line that features the MicroTrax Pearl Reactive cover, same as on the Exotic Gem, and Mentor symmetric core that was partly inspired by the Dare Devil line of balls from a few years ago. All that goodness aside, what really makes this ball special is that it’s the first collaboration between “The Shafanie Duo” of PWBA stars Stephanie Johnson and Shannon O’Keeke, and is in support of a partnership with Big Brothers Big Sisters – with 5% of the sales from the Roto Grip Duo being donated to aid in the development and support of kiddos within the program!! This ball is a performer on the lanes as well. Because it has the same cover as the Exotic Gem, the Duo feels very much like a symmetrical version of the Exotic. The combination of the low RG, mid-differential core and strong coverstock makes this a strong but predictable pearl ball. Because the Duo comes out-of-box with the Reacta Gloss finish, I scuffed the surface lightly with a used 2000-grit Abralon pad like I have with many other balls that come polished just to scratch the surface a bit and knock some shine off. The Duo has thus far proven itself to be very versatile and I believe would be a great ball for most any league bowler as well. The Duo is clean enough to get through the front part of the lane to remain online, and it has a good strong backend reaction that isn’t so sharp that you can’t control it. In most cases, the Duo is the first ball out of my bag; and for league night it’s the only ball I need. If you’re looking for a ball that is cleaner with less overall hook than the Gem or Exotic Gem, but still something stronger than the Hyped and is versatile enough to thrown as the lanes transition – the Duo is it! Chris Pollentier Storm Products Pro Shop Staff #StormNation #SquadRG

As soon as I saw one picture of this ball I knew we were in for a good one! First and foremost it is an amazing thing the see Roto Grip and Shefanie teaming up for such a great cause like Big Brothers Big Sisters and donating money from every Duo that they sell! My home center every year puts on a big weekend event for Big Brothers Big Sisters so this definitely hit close to home for me. Now for the ball itself, my first time throwing it was for my reaction video and to say that I loved what I saw would be an understatement! The Duo definitely has given me some good old classic Roto Grip vibes! If you were a fan of the Wrecker or the Uproar then you should absolutely look into getting yourself a Duo because I personally think it shapes up exactly like those 2 balls did. It is definitely a tick stronger tho. It is also a perfect 1-2 punch for me with the Exotic Gem. Very similar shape wise except the Duo is a smidge weaker and a perfect ball down for when the Exotic is starting to lock up. Honestly tho if you haven’t drilled one yet then what are you waiting for!

I am a higher speed, rev challenged 220-250ish, high tilt, high rotation, and super low track player, I drilled my Roto Grip DUO 5x 3 1/2 x 1 3/4 using the Storm VLS and my axis point is 3 ¼ right and 7/8 up. The Roto Grip DUO is middle of the road pearl symmetric benchmark ball that is easy through the front of the lane with great continuation down lane without being too angular. Overall, the ball is responsive and I see myself using this on house shots or medium volume patterns. My YouTube video of the ball can be found at: https://youtu.be/o2Us3qgPE_c?si=gkKKb7ZaI36xwHeV

About Me 900 Global Staff Left Handed: High Rev High Speed Player Pap: - 47/8 +1 Rev Rate: +-500 Speed 17 mph Layout: 70 X 3¾ X 30 Ball Video: N/A The Roto Grip Duo is what I like to call a “Pallet Ball.” What I mean by this is that I would love to buy a pallet of them and keep drilling this ball up. The Duo is so clean and controllable from the front part of the lane to the backend. Speaking of the backend, it is so predictable with incredible finishing power. The amount of mistake area that I can create with this ball is ridiculous. This ball is going to be a benchmark ball for me and will be the first ball out of back on any pattern I throw with. The Duo has been able to replace quite a few balls in my arsenal because of the versatility I have in throwing this. It would be in your best interest to get a Duo and put one in your bag, not only will you bowl well with it but 5% is going to go to charity. One of the best balls I have ever thrown and that is saying quite a bit. Joel Donner 900 Global Staff Member Cedar Rapids, IA #StormNation #StrikingWorldwide #RGSquad #Iambowling #teamiambowling #bowlingisfun

Ball Specs: Ball - Duo Core - Mentor Coverstock - MicroTrax Pearl Surface Finish - Reacta Gloss Finish VLS Layout - 4.25x4x2 Bowler Specs: Right Hand 14 - 15 out of hand Tweener Speed/Revs matched PAP: 5 ⅜ over x ⅞ up Lane Condition: THS Review: A strong pearl symmetrical, something that you cannot really go wrong with. We have the 900 Global Zen, Storm Fate, and Idol Cosmos (discontinued recently). Adding the DUO to the line was an awesome move. I won;t sugar coat this. This ball is NUTS. Think about it, you have the Mentor core, which provides strong flare and hitting power, and the same coverstock that is on the Exotic Gem!!! One of the strongest coverstocks in the industry, and we have it on the Roto Grip DUO. The ball hits like a truck. You can watch any ball review, watch any pro throw it, and you will see this ball bury the pins. The help from the microtrax coverstock is insane. When I heard that this ball had that coverstock on it, it was going to be an immediate buy and I was going to recommend it to my friends. The DUO provides a clean transition through the fronts and midlane, but it really like to start revving up once it gets closer and closer to the dry. Some of the weaker balls we have in the SPI line like to miss skid just a tad further, so taking layout into consideration is extremely important. Whether we played right, or jumped in left, the DUO responded well to both. From what I saw, this ball shined well playing just inside of the 2nd arrow mark. Bowling on THS, it would hold the line to the pocket if I missed in and was forgiving if I missed right. The strength of the DUO swished around pins like it was nothing and corner pins were not an issue as long as the entry angle into the pocket was not flat. I am extremely impressed with this piece and I hope we get another year out of the ball! Mitchel G. - YT: Fullsendbowling

The Roto Grip Duo Latest addition to the HP3 line RG 2.49 diff .046 Mentor Core MicroTrax Pearl Cover The Duo is so much more versatile than I expected. When I ready the Core #'s and saw the cover, I assumed this would be a very forward rolling ball. It has proven me wrong and can be used by many different styles on many different patterns. I can get left and swing it or stay straight and work its forward roll. I have seen the Duo skid for others that usually need help getting the ball down the lane. It's not going to be a hockey-stick skid/flip but also not early and flat. This is one that should be very common at leagues, with many different styles benefitting from it's versatility.