Product Description Storm IQ Tour Bowling BallWith marvelous predictability and unwavering reliability, the Storm IQ Tour Edition bowling ball is sure to become your new benchmark ball. The C3 CentripetalControl Core is engineered to yield ample midlane roll while smoothing out the transition. This fast-revving symmetrical shape is unique in its mass distribution and is the brains behind it all.Prepped with a perfectly balanced 4000-grit Abralon finish, the IQ Tour Edition’s proven R2S solid coverstock ensures great traction and performance. You may know that coverstocks come in a variety of levels of aggressiveness. Since we built the IQ Tour Edition to be the foundation of your arsenal, you can be confident in the fact that this ball will be consistent across a variety of lane conditions.Color: Midnight BlueCoverstock: R2S Solid ReactiveWeight Block: C Centripetal Control CoreFactory Finish: 4000-grit AbralonFlare Potential: 3 – 5 (Medium-High)Radius of Gyration (RG): 2.49Differential (Diff): 0.029Fragrance: Aromatherapy – Apple CrispWeightRGDiff.162.490.035152.490.029142.540.034132.590.045122.650.035