Compare the specs of the Hammer Black Widow Urethane Pink Pearl and Hammer Purple Solid Reactive 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 Urethane Pink Pearl | Purple Solid Reactive |
| Cover Name | Urethane Pearl | Reactive Solid |
| Cover Type | Urethane Pearl | Reactive Solid |
| Box Finish | 360 / 800 SiaAir | 500 / 1500 SiaAir |
| Color | Pink Pearl | Purple |
| Core Name | Gas Mask | LED |
| Core Type | Asymmetrical | Symmetrical |
| RG | 2.500 | 2.586 |
| Total Diff. | 0.058 | 0.027 |
| Int. Diff. | 0.016 | 0.000 |
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