You'll find that the inside is the exact same Hustle Core used in their previous balls but they've created a new Thrilled Reactive coverstock that will create earlier movement than all the others and help give you some calmness on friction

All soles must be trimmed to fit

6 3/4" – 7" = Small

Highly effective oil removing pad

Columbia 300 High Speed Bowling Ball Weight:15 lbs. You'll find that the insideColumbia 300 High Speed Bowling Ball The new Columbia 300 High Speed is a hybrid incarnation of HK22 infused with the Formula 1 additives that made the Top Speed a true sensation. Bowlers can expect exceptional lane coverage and powerful pin action, ensuring an unforgettable bowling experience with the new high speed. Performance: High Performance Color: Smoke Lime Scarlet Core Type: Asymmetrical Core Name: Shifter Coverstock: HK22 Formula 1 Hybrid