Roto Grip Duo vs. Roto Grip Idol Cosmos

Compare the specs of the Roto Grip Duo 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.

Click here to add or remove balls from this comparison.

Roto Grip Duo
Roto Grip Idol Cosmos
Ball NameDuoIdol Cosmos
Cover NameMicroTrax Pearl ReactiveXtremeTrax Pearl Reactive
Cover TypeReactive PearlReactive Pearl
Box FinishReacta Gloss4000 Abralon
ColorBlack / Electric GreenStardust Teal
Core NameMentorIkon
Core TypeSymmetricalSymmetrical
Total Diff.0.0460.052
Int. Diff.0.0000.000



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.

Filter by Date
Filter by Torque
Filter by Back End
Torque Legend:
Back End Legend:

For more information about our bowling ball testing and review process, please click here.