Black Pearl Urethane

Black Pearl Urethane bowling ball photo

Urethane Pearl 78D Coverstock

LED Symmetric Core

16 lb 15 lb 14 lb 13 lb 12 lb
RG 2.61 2.65 2.68 2.631 2.628
Diff 0.03 0.015 0.013 0.02 0.026
Length 106% 131% 150% 119% 118%
Flare 33% 0% 0% 11% 24%



  • Factory Finish:
    500 Siaair Micro Pad

From Hammer:

Hammer has been the undisputed urethane champion in bowling since the Purple Pearl Urethane’s introduction, and we are excited to carry that title through the new phase of harder urethane bowling balls. Since the PBA announced its rule change, only allowing urethane balls to be 78D or harder, our chemists and lab rats have been working hard producing the now famed NU Blue Hammer and the new 78 hardness Black Pearl Urethane. The Black Pearl Urethane is reminiscent of the Purple Pearl Urethane, but the hardness makes it a little cleaner and hooks slightly less overall than the Purple Pearl. Our pros who have tested the Black Pearl Urethane see this ball four boards less with their feet and two boards with their eyes and were able to use straighter angles through the front part of the lane.