This bowling ball ships UNDRILLED with no holes unless you add drilling services. Storm is synonymous with high performance, but not everyone is in the market for premium performance. The Mix series is perfect for recreational bowlers just getting their feet wet or the seasoned veteran needing a straighter option for spare shooting. The Mix’s traditional 3-piece core enhanced predictability while the urethane coverstock ensures durability that other materials just can’t offer. Coverstock: U1S Pearl Urethane Core: Traditional 3-piece Factory Finish: 3500-grit Polished Reaction: Low Recommended Lane Condition: Light