NU Blue Hammer

Hammer NU Blue Hammer bowling ball photo

Not Urethane Coverstock

16 lb 15 lb 14 lb 13 lb 12 lb
RG 2.541 2.586 2.605 2.598 2.592
Diff 0.035 0.027 0.026 0.025 0.031
Length 63% 91% 103% 99% 95%
Flare 44% 27% 24% 22% 36%



  • Factory Finish:
    500, 1000 Siaair Micro Pad

From Hammer:

Hammer is excited to introduce a revolutionary ball–actually a game-changer for bowlers seeking alternatives to traditional urethane ball reaction.