Roto Grip Idol Cosmos vs. Roto Grip Gem

Compare the specs of the Roto Grip Idol Cosmos and Roto Grip Gem 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 Idol Cosmos
Roto Grip Gem
Ball NameIdol CosmosGem
Cover NameXtremeTrax Pearl ReactiveMicroTrax Solid Reactive
Cover TypeReactive PearlReactive Solid
Box Finish4000 Abralon2000 Abralon
ColorStardust TealCitrine / Ruby / Amethyst
Core NameIkonDefiant LRG
Core TypeSymmetricalAsymmetrical
Total Diff.0.0520.053
Int. Diff.0.0000.016



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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