Compare the specs of the Roto Grip Hy-Wire and Roto Grip Unhinged 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 | Hy-Wire | Unhinged |
| Cover Name | 62M | 60M |
| Cover Type | Reactive Hybrid | Reactive Pearl |
| Box Finish | 1500 Grit Polished | 1500 Grit Polished |
| Color | Blue Solid / Yellow and Violet Pearl | Cobalt Blue |
| Core Name | Middle Roll 70 | Late Roll 69 |
| Core Type | Symmetrical | Symmetrical |
| RG | 2.50 | 2.58 |
| Total Diff. | 0.043 | 0.049 |
| Int. Diff. | 0.000 | 0.000 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |