Compare the specs of the Roto Grip UFO Alert 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 | UFO Alert | UFO |
| Cover Name | eTrax Hybrid | MicroTrax-S20 |
| Cover Type | Reactive Hybrid | Reactive Solid |
| Box Finish | 1500 Grit Polished | 2000 Grit Pad |
| Color | Purple Solid / Emerald / Teal | Deep Purple / Baby Blue / Neon Green |
| Core Name | E.T. (Equalizer Technology) | E.T. (Equalizer Technology) |
| Core Type | Asymmetrical | Asymmetrical |
| RG | 2.52 | 2.52 |
| Total Diff. | 0.054 | 0.054 |
| Int. Diff. | 0.016 | 0.016 |
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