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.Brunswick Combat Bowling Ball ? Pro-Performance for Precision and Versatility The Brunswick Combat Bowling Ball takes Pro-Performance to the next level, combining precision, control, and versatility. Designed for bowlers who demand strategic shot-making and reliable motion, this vibrant four-color pearl ball is a dynamic addition to any arsenal. At its core is the new Rampart asymmetric engine, delivering a clean, consistent motion through the heads with impressive downlane pop. Wrapped in the upgraded Alpha Premier Pearl Reactive coverstock?an evolution from HK22C?the Combat provides the perfect blend of skid and flip without sacrificing control. This design makes it the most versatile shiny asymmetric option in the Brunswick lineup, ideal for navigating medium to heavier oil conditions. Whether you're a high-level competitor or an improving league bowler, the Brunswick Combat brings the power and finesse needed to elevate your performance. Clean through the front. Aggressive at the back. Built to win. Key Features: Alpha Premier Pearl Reactive Coverstock: Delivers a cleaner motion than HK22C with a sharp, continuous backend Rampart Asymmetrical Core: Offers higher RG and lower diff for controlled yet dynamic movement Shiny Asymmetric Design: Versatile for various styles and adaptable to medium-heavy oil patterns 4?5? Flare Potential: Strong motion with predictable transition for reliable reads Performance-Ready Finish: Comes out of the box polished at 1500 grit for max length and pop Specifications: Brand: Brunswick Line: High Performance Bowling Balls Color: Black, Blue, Purple, Red Coverstock: Pearl Reactive Cover Name: Alpha Premier Pearl Reactive Core Shape: Asymmetrical Core Core Name: Rampart Surface Finish: 1500 Grit Polish Flare Potential: 4 ? 5 Inches Recommended Lane Conditions: Medium ? Heavy Oil Available Weights: 12LB, 13LB, 14LB, 15LB, 16LB Scent: None