Roto Grip Retro RG Spare Bowling Ball finger inserts The core provides a low

The core provides a low RG and a moderate differential

You can also pack it with your bowling shoes and accessories

Expect heavy roll with no shortage of higher scores and more strikes

This ball uses the Threshold core which includes DynamiCore and DOT to offer great power and superb durability

both use our new Reflex cover base and different finishes for different bowler styles and conditions

Roto Grip Retro RG Spare Bowling Ball finger inserts The core provides a lowRoto Grip Retro RG Spare Bowling Ball Roto Grip Retro RG is a new launch spare ball with the most basic and simplistic core shape. What makes this ball the ideal core for spare conversions is the Traditional 3 Piece Core which features a pancake shaped puck at the top which provides an end over end tumbling effect. Whether you are tired of your old spare ball or you are looking for your first spare ball then this might be the ball that suits your