Roto Grip RockStar Bowling Ball Color: Crimson/Jet/Maroon Coverstock: NanoStar Solid Reactive Weight Block: Rocker + A.I. Core Technology Factory Finish: 2000-grit Abralon Flare Potential: High Radius of Gyration (RG): 16lbs - 2.48; 15lbs - 2.48; 14lbs - 2.50 Differential (Diff): 16lbs - 0.054; 15lbs - 0.050; 14lbs - 0.046 Intermediate Differential (Diff): N/A Fragrance: N/A Behind the Design: We both know that at some point in your life you ripped on an air guitar or shredded on the air drums to the roar of of a sold out crowd in your own head. So we decided to help you release that inner ROCKSTAR of yours by creating an instrument everyone can use to make noise on the lanes. In order to kick things up a notch in the HP3 line we requested a new combination of core and cover, and well, lets just say the R&D Band did not disappoint. The new Rocker™ Core brings an alternative motion throughout the lane. While the new NanoStar™ coverstock provides aggressive yet classic traction throughout the lane on those Medium to Heavy conditions.
