Compare the specs of the Roto Grip Gem 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 | Gem | Rubicon UC3 |
| Cover Name | MicroTrax Solid Reactive | Tour-ethane Pearl |
| Cover Type | Reactive Solid | Urethane Pearl |
| Box Finish | 2000 Abralon | 1000 Abralon |
| Color | Citrine / Ruby / Amethyst | Platinum Pearl |
| Core Name | Defiant LRG | Rondure |
| Core Type | Asymmetrical | Asymmetrical |
| RG | 2.47 | 2.49 |
| Total Diff. | 0.053 | 0.052 |
| Int. Diff. | 0.016 | 0.011 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |