Compare the specs of the Hammer Effect and Hammer Black Pearl Urethane 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 | Effect | Black Pearl Urethane |
| Cover Name | HK22 – Cohesion Pearl | Urethane Pearl 78D |
| Cover Type | Reactive Pearl | Urethane Pearl |
| Box Finish | 500 / 1000 / 1500 SiaAir / Factory Compound | 500 SiaAir |
| Color | Maroon / Blue / Black / Purple | Black Pearl |
| Core Name | Huntsman | LED |
| Core Type | Asymmetrical | Symmetrical |
| RG | 2.470 | 2.650 |
| Total Diff. | 0.050 | 0.015 |
| Int. Diff. | 0.017 | 0.000 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |