Compare the specs of the Roto Grip Critical and Roto Grip Eternal Cell 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 | Critical | Eternal Cell |
| Cover Name | 67MH Hybrid | 75M |
| Cover Type | Reactive Hybrid | Reactive Solid |
| Box Finish | 3000 Grit Pad | 1500 Grit Polished |
| Color | Purple and Green Pearl / Grey Solid | Raspberry / Orange / Black |
| Core Name | Triliptic | Nucleus |
| Core Type | Asymmetrical | Asymmetrical |
| RG | 2.49 | 2.52 |
| Total Diff. | 0.058 | 0.056 |
| Int. Diff. | 0.013 | 0.018 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |