Compare the specs of the Roto Grip Clone and Roto Grip UFO Alert side by side in the ball comparison table below. To view the full bowling ball review for one of these balls, click the ball name link in the table below.
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| Brand | Roto Grip | Roto Grip |
| Ball Name | Clone | UFO Alert |
| Cover Name | OptiTrax Solid Reactive | eTrax Hybrid |
| Cover Type | Reactive Solid | Reactive Hybrid |
| Box Finish | Reacta Gloss | 1500 Grit Polished |
| Color | Alien / Deep Mist / Cyber Grape | Purple Solid / Emerald / Teal |
| Core Name | Cloned ET | E.T. (Equalizer Technology) |
| Core Type | Asymmetrical | Asymmetrical |
| RG | 2.51 | 2.52 |
| Total Diff. | 0.056 | 0.054 |
| Int. Diff. | 0.016 | 0.016 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |