Hammer Black Widow Urethane vs. Roto Grip Hot Cell

Compare the specs of the Hammer Black Widow Urethane and Roto Grip Hot Cell 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	Hammer	Roto Grip
Ball Name	Black Widow Urethane	Hot Cell
Cover Name	Urethane	Radioactive
Cover Type	Urethane Solid	Urethane Solid
Box Finish	360 / 500 / 500 Abralon	1000 Grit Pad
Color	Black	Hot Red
Core Name	Gas Mask	Nucleus
Core Type	Asymmetrical	Asymmetrical
RG	2.50	2.52
Total Diff.	0.058	0.056
Int. Diff.	0.016	0.018
Torque Length Back End Total Hook Ball Tester Ratings	See Performance Ratings... Already a premium member? Click here to log in.

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

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Bowling Ball Comparison Graph