Compare the specs of the Roto Grip Idol Synergy 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 | Idol Synergy | UFO Alert |
| Cover Name | eTrax | eTrax Hybrid |
| Cover Type | Reactive Hybrid | Reactive Hybrid |
| Box Finish | 1500 Grit Polished | 1500 Grit Polished |
| Color | Amethyst Pearl / Magenta Solid | Purple Solid / Emerald / Teal |
| Core Name | Ikon | E.T. (Equalizer Technology) |
| Core Type | Symmetrical | Asymmetrical |
| RG | 2.49 | 2.52 |
| Total Diff. | 0.052 | 0.054 |
| Int. Diff. | 0.000 | 0.016 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |