Compare the specs of the Hammer Viral and Hammer Spike Black/Blue 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 | Viral | Spike Black/Blue |
| Cover Name | Violent Flip Reactive | Grand Theft Reactive III Pearl |
| Cover Type | Reactive Pearl | Reactive Pearl |
| Box Finish | 500 / 1000 Abralon / Powerhouse Factory Finish Polish | 500 / 500 / 500 / 1000 Abralon / Powerhouse Clean N' Sheen |
| Color | Gun Smoke | Black / Blue |
| Core Name | Vibe | Widow Nasty |
| Core Type | Symmetrical | Symmetrical |
| RG | 2.51 | 2.56 |
| Total Diff. | 0.042 | 0.054 |
| Int. Diff. | 0.000 | 0.000 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |