This ball ships professionally PRE-DRILLED for your convenience. We?ve simplified the process so you can hit the lanes faster. Based on the ball weight you choose, we?ll drill it to a standard hand size that fits most bowlers in that weight range: X-Small (6lbs): Ages 8 under Small (8?9lbs): Ages 8?11, women?s ring size 8?11 Medium (10?12lbs): Ages 11?15, adult ring size 10 or under Large (13?14lbs): Men?s ring size 10?12 or larger hands X-Large (15?16lbs): Men?s ring size 13+ or extra-large hands Want a different drilling size than standard? Email us immediately after checkout with your order number and your preferred size. Ebonite Game Breaker 5 GB5 Bowling Ball ? Blue Dependable Power Meets Proven Performance ? Your New Favorite for Medium to Heavy Oil Conditions. The Ebonite Game Breaker 5 (GB5) brings the trusted performance of the Game Breaker series to new heights. This high-performance ball features the iconic Enhanced V2 Symmetrical Core, combined with the powerful HK22-based GB 12.7 Solid Reactive coverstock, offering enhanced midlane traction and a strong, controlled backend motion. Designed for bowlers who demand consistency and predictability, the GB5 thrives on medium to heavy oil patterns, delivering a motion that?s strong, smooth, and easy to read. Whether you're a competitive player or a league regular, the GB5 adds precision and power to your arsenal, making it an essential choice for anyone looking to step up their game. Why Buy the Ebonite Game Breaker 5 GB5? Solid Reactive Coverstock with HK22 Base: Provides excellent traction and control in the oil. Enhanced V2 Core: Offers a smooth and predictable motion with great continuation through the pins. Medium?Heavy Oil Mastery: Engineered for performance on challenging oil conditions. Game Breaker Legacy: One of Ebonite?s most successful and trusted lines, now improved. Bold All-Blue Color: Clean, vibrant design for those who like to stand out on the lanes. Technical Specifications: Coverstock: GB 12.7 Solid Reactive (HK22 base) Core: Enhanced V2 Symmetrical Core RG (15lb): 2.48 Differential (15lb): 0.048 Mass Bias Strength: N/A Surface Finish: 1500 Grit Flare Potential: 4?5 Inches Lane Conditions: Medium to Heavy Oil Weight Range: 10lb ? 16lb Color: Blue Performance Level: Pro Performance / High Performance Scent: None Release Date: March 2024 Upgrade to Consistency and Confidence with the GB5 ? The next generation of Game Breaker performance is here.