The Chalk

Hammer The Chalk bowling ball photo

GTR Pearl Reactive Coverstock

Raw Hammer Assault Symmetric Core

16 lb 15 lb 14 lb 13 lb 12 lb
RG 2.49 2.48 2.51 2.53 2.6
Diff 0.051 0.056 0.055 0.055 0.039
Length 31% 25% 44% 56% 100%
Flare 80% 91% 89% 89% 53%



  • Factory Finish:
    500, 1000, 2000, Factory Finish Polish