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. Ready to take your game to new heights? The Columbia 300 Atlas Hybrid delivers angular power and control, making it your secret weapon for the season. Columbia 300?s new Atlas Hybrid is a bold addition to their high-performance lineup, designed to provide bowlers with exceptional backend action and length. Featuring the Columbia 300 Atlas Core, the ball?s innovative core design incorporates a dense flip block that creates an aggressive change of direction at the backend. Paired with the Formula 1 Hybrid Reactive coverstock, the Atlas Hybrid outperforms previous polished asymmetric balls in both length and angularity, making it ideal for medium to heavy oil conditions. With a 1500 Grit Polish surface finish, the Atlas Hybrid glides smoothly through the front part of the lane before making a powerful turn, offering bowlers more precision and control than ever. The ball?s unique color combination of blue, orange, and purple gives it a striking appearance that demands attention, both on and off the lanes. Whether you?re looking to tackle your toughest oil patterns or want a ball that provides consistent and predictable motion, the Atlas Hybrid is the perfect fit. With its exceptional backend performance, it?s ready to elevate your game to the next level. Specs at a Glance: Coverstock: Columbia 300 Formula 1 Hybrid Reactive Core: Columbia 300 Atlas Core Core Shape: Asymmetrical Core Coverstock Type: Hybrid Reactive Finish: 1500 Grit Polish RG (15lb): 2.52 Diff (15lb): 0.054 Flare Potential: 4?5 Inches Mass Bias Strength: 0.018 Best For: Medium ? Heavy Oil Weights: 12LB, 13LB, 14LB, 15LB, 16LB Color: Blue, Orange, Purple Performance Level: High Performance Bowling Balls Get your hands on the Columbia 300 Atlas Hybrid and experience a whole new level of performance with unmatched length, backend motion, and a striking visual appeal. Add it to your arsenal and watch your scores soar!