Urethane
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Hammer Black Pearl Urethane Bowling Ball
Hammer
MSRP: $209.95$149.95Hammer Black Widow Ghost Pearl Bowling Ball Color: Black Pearl Coverstock: Urethane Pearl 78D Weight Block: LED Factory Finish: 500 Siaair Flare Potential: Low Radius of Gyration (RG): 16lbs - 2.61; 15lbs - 2.65;...MSRP: $209.95$149.95