Urethane

Storm IQ Tour A.I. Bowling Ball Color: Emerald/Black Coverstock: R2S Hybrid Reactive Weight Block: C3 A.I. Core Factory Finish: Power Edge Flare Potential: Medium Radius of Gyration (RG): 16lbs - 2.48; 15lbs - 2.48; 14lbs - 2...

Storm IQ Tour 78/U Bowling Ball Color: Crimson Coverstock: Controll 78 Solid Urethane Weight Block: C3 Centripetal Control Core Factory Finish: 500-grit Abralon Flare Potential: Medium Radius of Gyration (RG): 16lbs - 2.49;...