Compare the specs of the Roto Grip Duo and Roto Grip Idol Cosmos 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 | Duo | Idol Cosmos |
| Cover Name | MicroTrax Pearl Reactive | XtremeTrax Pearl Reactive |
| Cover Type | Reactive Pearl | Reactive Pearl |
| Box Finish | Reacta Gloss | 4000 Abralon |
| Color | Black / Electric Green | Stardust Teal |
| Core Name | Mentor | Ikon |
| Core Type | Symmetrical | Symmetrical |
| RG | 2.49 | 2.49 |
| Total Diff. | 0.046 | 0.052 |
| Int. Diff. | 0.000 | 0.000 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |