Compare the specs of the Roto Grip RST X-1 and Roto Grip UFO 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 | RST X-1 | UFO |
| Cover Name | MicroTrax Hybrid | MicroTrax-S20 |
| Cover Type | Reactive Hybrid | Reactive Solid |
| Box Finish | 3000 Abralon | 2000 Grit Pad |
| Color | Black / Dark Forest / Forest Pearl | Deep Purple / Baby Blue / Neon Green |
| Core Name | RST (Roto Star Tour) | E.T. (Equalizer Technology) |
| Core Type | Asymmetrical | Asymmetrical |
| RG | 2.53 | 2.52 |
| Total Diff. | 0.053 | 0.054 |
| Int. Diff. | 0.016 | 0.016 |
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