Compare the specs of the Hammer Black Pearl Urethane and Hammer Hazmat 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 Pearl Urethane | Hazmat |
| Cover Name | Urethane Pearl 78D | HK22 - Semtex Hybrid |
| Cover Type | Urethane Pearl | Reactive Hybrid |
| Box Finish | 500 SiaAir | 500 / 1000 / 1500 SiaAir / Factory Compound |
| Color | Black Pearl | Black / Sapphire / Jade |
| Core Name | LED | Hazmat |
| Core Type | Symmetrical | Symmetrical |
| RG | 2.650 | 2.479 |
| Total Diff. | 0.015 | 0.055 |
| Int. Diff. | 0.000 | 0.000 |
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