Compare the specs of the Roto Grip Idol Cosmos and Roto Grip Rubicon UC3 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 Cosmos | Rubicon UC3 |
| Cover Name | XtremeTrax Pearl Reactive | Tour-ethane Pearl |
| Cover Type | Reactive Pearl | Urethane Pearl |
| Box Finish | 4000 Abralon | 1000 Abralon |
| Color | Stardust Teal | Platinum Pearl |
| Core Name | Ikon | Rondure |
| Core Type | Symmetrical | Asymmetrical |
| RG | 2.49 | 2.49 |
| Total Diff. | 0.052 | 0.052 |
| Int. Diff. | 0.000 | 0.011 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |