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. In sports, we are always told to hustle well Roto Grip has a ball line that will do just that on the lanes. The Roto Grip Hustle M+M was designed to add variety to the Hustle line of bowling balls. This ball takes a medium RG core and medium differential to create a ball that will offer good mid-lane motion and continuation. The VTC Pearl Reactive Coverstock was created to offer a slightly different reaction. With the Versatile Traction Control coverstock finished with a Reacta Gloss finish this ball offers the right amount of power and control! Color Magenta + Midnight All colors do vary somewhat from the picture shown Core Hustle Coverstock VTC Pearl Reactive Finish Reacta Gloss RG 2.53 Differential 0.030 Recommended Lane Condition Light to Medium Oil A few tiny pit holes in the cover stock of the ball are normal