The Centripetal™ HD-AI Core used in this popular series is a symmetrical core that excels in high-speed rotation performance and offers the best controllability from Storm. This time, the Centripetal™ HD-AI core is combined for the first time with Nex+™ Solid Reactive, and the surface is finished with 2000 grit Abralon™, making it suitable for oily conditions. Although it has a strong cover stock, it has excellent straightness in front of the lane, and has an excellent arc-shaped trajectory that is extremely stable even in heavy oil conditions, making it easy to control. It also has strong back-end power, making it an attractive ball with powerful pin action. The result is a ball that reacts great on all lane conditions, whether left as is or polished with Reactor Gloss or Power Edge. Surface: 2000 Grit AbralonCore: Centripetal A.I. CoreCoverstock: NeX+ Solid ReactiveColor: Magenta/Electric Blue/Deep PurpleRG: 2.46 (14lbs)Differential: .056 (14lbs)Iterm Diff: N/AScent: Apple Crisp