Compare the specs of the Hammer Black Widow 3.0 and Hammer 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 3.0 | Effect |
| Cover Name | HK22 - Aggression Solid | HK22 – Cohesion Pearl |
| Cover Type | Reactive Solid | Reactive Pearl |
| Box Finish | 500 / 1000 / 2000 SiaAir | 500 / 1000 / 1500 SiaAir / Factory Compound |
| Color | Black / Orange | Maroon / Blue / Black / Purple |
| 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 | Already a premium member? Click here to log in. | |