The Blue Hammer is an iconic throwback in performance ball technology. By combining a re-engineered Vibe core shape with our new Performance Urethane coverstock, we're introducing a ball that rolls like the old-school balls without actually being the old-school stuff. This new spin on older ball motion brings the control of yesterday's balls and the performance of today's stuff to the lane for Hammer!

Performance Urethane coverstock. Finished with 800 abranet, 1000 abralon, 2000 abralon, 4000 abralon. Out of box Ra value is 3.0.

Re-engineered Vibe Core
10# RG 2.72 Diff 0.031
11# RG 2.62 Diff 0.031
12# RG 2.60 Diff 0.039
13# RG 2.53 Diff 0.055
14# RG 2.61 Diff 0.026
15# RG 2.57 Diff 0.032
16# RG 2.57 Diff 0.028