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 Rhino Magenta Purple Navy Bowling Ball Designed for new bowlers learning to hook and experienced players needing control on drier lanes, the Brunswick Rhino Magenta Purple Navy blends eye-catching color with dependable performance. This entry-level pearl reactive ball is built around Brunswick?s reliable R-16 Pearl Reactive coverstock, delivering impressive length and a smooth backend reaction without over-sensitivity to lane conditions. Inside, the Light Bulb Core delivers a predictable and stable motion, giving you a smooth roll with enhanced pin carry. A 2.52 RG and .030 differential in the 15lb version provide mild flare and controllable transitions, perfect for dry to medium oil patterns. Thanks to Brunswick?s lightweight engineering, all weights from 12LB to 16LB use the same core design, ensuring consistent performance no matter your weight preference. This ball is a go-to choice for developing bowlers or as a dry-lane option for seasoned players. Technical Specs: Brand: Brunswick Coverstock Type: Pearl Reactive Coverstock Name: Brunswick R-16 Pearl Reactive Core Shape: Symmetrical Core Core Name: Brunswick Light Bulb Core RG (15LB): 2.52 Differential (15LB): 0.030 Mass Bias Strength: N/A Flare Potential: 2 ? 3 Inches Surface Finish: 500 Grit Polish Lane Conditions: Dry ? Medium Oil Performance Level: Entry Level / Affordable Performance Color: Blue, Pink, Purple Available Weights: 10LB, 11LB, 12LB, 13LB, 14LB, 15LB Scent: None Add flair to your game with the Rhino Magenta Purple Navy?a great starter or dry-lane ball that looks as good as it rolls.