Bring the heat to the lanes. The KR Strikeforce Rise Solid is a reactive-resin performance ball approved for USBC competition — a great first step into your arsenal. In a bold purple/black solid finish, the Thrust Solid cover gives you earlier hook and a smooth move back to the pocket on most lane conditions. Pair it with the Rise Pearl and you've got a clean one-two benchmark: the Solid reads earlier, the Pearl saves energy for a sharper move off the spot. Who It's For New league bowlers — an affordable, USBC-approved start to your arsenal. Medium-condition players — earlier hook with a smooth, controllable shape. Rise Pearl owners — the solid benchmark that reads the midlane earlier. Ball Specifications Color: Purple/Black Solid Coverstock: Thrust Solid Weight Block: Launch Core Factory Finish: Sanded 2000 Abralon Flare Potential: Medium Radius of Gyration (RG): 16lbs - 2.520; 15lbs - 2.530; 14lbs - 2.600 Differential (Diff): 16lbs - 0.050; 15lbs - 0.047; 14lbs - 0.037 Intermediate Differential (Diff): N/A Fragrance: N/A Backed by expert drilling, fast shipping, and the best prices on performance gear.