Compare the specs of the Hammer NU Blue Hammer and Hammer Extreme Envy 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 | NU Blue Hammer | Extreme Envy |
| Cover Name | Not Urethane | Envy CFI Solid |
| Cover Type | Not Urethane | Reactive Solid |
| Box Finish | 500 / 1000 SiaAir | 500 / 2000 SiaAir |
| Color | Bad Ass Blue Pearl | Black / Crimson / White |
| Core Name | LED | Launcher LRG |
| Core Type | Symmetrical | Asymmetrical |
| RG | 2.586 | 2.479 |
| Total Diff. | 0.027 | 0.054 |
| Int. Diff. | 0.000 | 0.022 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |