Roto Grip Gem vs. Roto Grip Idol Cosmos

Compare the specs of the Roto Grip Gem and Roto Grip Idol Cosmos 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 Gem
Roto Grip Idol Cosmos
Ball NameGemIdol Cosmos
Cover NameMicroTrax Solid ReactiveXtremeTrax Pearl Reactive
Cover TypeReactive SolidReactive Pearl
Box Finish2000 Abralon4000 Abralon
ColorCitrine / Ruby / AmethystStardust Teal
Core NameDefiant LRGIkon
Core TypeAsymmetricalSymmetrical
Total Diff.0.0530.052
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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