Hammer Black Widow Mania vs. Hammer Special Effect

Compare the specs of the Hammer Black Widow Mania and Hammer Special Effect 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	Hammer
Ball Name	Black Widow Mania	Special Effect
Cover Name	HK22 - Cohesion Pearl	HK22 - Cohesion Solid
Cover Type	Reactive Pearl	Reactive Solid
Box Finish	500 / 1000 / 1500 SiaAir / Factory Compound	500 / 1000 / 1500 SiaAir / Factory Compound
Color	Cobalt / Black	Purple / Red / Grape / Black
Core Name	Gas Mask	Huntsman
Core Type	Asymmetrical	Asymmetrical
RG	2.500	2.470
Total Diff.	0.058	0.050
Int. Diff.	0.016	0.017
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