Compare the specs of the Hammer Black Widow Ghost Pearl and Hammer Obsession 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 Ghost Pearl | Obsession |
| Cover Name | Aggression Pearl | Envy Solid CFI |
| Cover Type | Reactive Pearl | Reactive Solid |
| Box Finish | 500 / 1000 / 1500 SiaAir / Crown Factory Compound | 500 / 1500 SiaAir |
| Color | White | Black / Pink / Burgundy |
| Core Name | Gas Mask | Obsession |
| Core Type | Asymmetrical | Asymmetrical |
| RG | 2.500 | 2.468 |
| Total Diff. | 0.058 | 0.050 |
| Int. Diff. | 0.016 | 0.013 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |