Roto Grip UFO Alert vs. Roto Grip Idol Helios

Compare the specs of the Roto Grip UFO Alert and Roto Grip Idol Helios 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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Roto Grip UFO Alert
Roto Grip Idol Helios
Ball NameUFO AlertIdol Helios
Cover NameeTrax HybridXtremeTrax Solid Reactive
Cover TypeReactive HybridReactive Solid
Box Finish1500 Grit Polished2000 Abralon
ColorPurple Solid / Emerald / TealRadiant Orange
Core NameE.T. (Equalizer Technology)Ikon
Core TypeAsymmetricalSymmetrical
Total Diff.0.0540.052
Int. Diff.0.0160.000



Back End

Total Hook

Ball Tester Ratings

Bowling Ball Comparison Graph

The graph below shows a visual comparison of the selected balls. Hover over each colored circle in the graph to see that ball’s name and ratings. Click a circle to view that ball’s full review.

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