This bowling ball ships PRE-DRILLED. There are 5 sizes and the sizes that we drill are based on the weight of the ball. X-Small: 6lbs- Ages 8 and under, Small: 8lbs and 9lbs- Ages 8-11 and womens ring size from 8-11, Medium: 10lbs, 11lbs, and 12lbs, Ages 11-15 and Adult Ring size 10 or lower, Large: 13lbs and 14lbs, Mens ring size 10-12 or people with larger hands, X-Large: 15lbs and 16lbs, Mens ring size over 13 or people with extremely large hands. If you would like a different size drilled for the weight you selected, you must contact us via email as soon as your order is placed with your order number. Pre-Drilled bowling balls cannot be returned or exchanged. Presenting the 900Global XPonent, the ultimate go-to and benchmark ball within the Global line! This meticulously crafted ball combines the perfect blend of older and newer technologies. The groundbreaking Reserve Blend 701 Cover, along with the Shrapnel 2.0 Symmetric Core, creates an exceptional shape on medium lane conditions. The highly reliable Shrapnel 2.0 Symmetric Core incorporates the same proven technology used in the Ordnance C4. With its low RG/medium differential configuration, this core quickly engages and generates a consistent, continuous motion on the lane. Its single-density construction ensures a versatile reaction that suits various playing styles across a wide range of oil patterns. To create the ideal benchmark ball, a solid shell is essential. That's where the Reserve Blend 701 Solid Cover comes in. By incorporating multiple newly discovered additives into their trusted cover formulations, 900Global has achieved something truly remarkable. This solid cover possesses a smooth nature while still delivering ample backend shape. With its 4000-Grit Abralon finish, the XPonent effortlessly reads medium oil patterns, providing exceptional predictability. Color: Midnight/Cyan Core: Shrapnel 2.0 Symmetric Coverstock: Reserve Blend 701 Solid Reactive RG: 2.48 (15# ball) Differe