Compare the specs of the Hammer Black Widow Ghost Pearl and Hammer Obsession Tour 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 Tour |
| Cover Name | Aggression Pearl | TourV2 Solid |
| Cover Type | Reactive Pearl | Reactive Solid |
| Box Finish | 500 / 1000 / 1500 SiaAir / Crown Factory Compound | 500 / 1000 SiaAir |
| Color | White | Burgundy |
| Core Name | Gas Mask | Obsession Tour |
| Core Type | Asymmetrical | Asymmetrical |
| RG | 2.500 | 2.469 |
| Total Diff. | 0.058 | 0.034 |
| Int. Diff. | 0.016 | 0.013 |
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