Roto Grip RST Hyperdrive Pearl. Roto Grip RST Core + AI. Roto Grip U-R1 Pearl Reactive. Roto Grip HP4 Bowling Balls. BOWLING BALL This ball is a Factory second only because of A couple tiny pits on the bottom side of the ball that don't amount to much at all otherwise the ball is perfect with good specs. PICS ARE OF THE EXACT BALL LISTED.
