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. Motiv Steel Forge Bowling Ball ? Strength, Speed, and Explosive Down-Lane Reaction The Motiv Steel Forge Bowling Ball delivers unmatched power and precision for bowlers who demand speed and strength. Built on the high-performance Detonator Symmetrical Core and wrapped in the aggressive Propulsion MXV Pearl Reactive Coverstock, the Steel Forge offers an explosive angular motion down lane with clean length and strong backend reaction. Featuring a 5000 Grit LSS surface finish, this ball combines length and traction for consistent performance on medium to heavy oil conditions. Whether you?re a speed dominant bowler, balanced player, or rev dominant powerhouse, the Steel Forge adapts to your style, giving you the edge you need in any league or tournament setting. Key Features: Propulsion MXV Pearl Reactive Coverstock ? Fine-tuned for powerful angular backend motion Detonator Symmetrical Core ? Low RG and high differential for fast revving and extreme angle 5000 Grit LSS Surface Finish ? Provides length with strong traction down lane Flare Potential ? 4 to 5 inches for substantial ball reaction and shape Versatile Performance ? Designed for medium to heavy oil conditions and varied bowler styles Ideal For: Speed Dominant Bowlers ? Late league nights and higher friction lanes where speed demands strong ball reaction Balanced Bowlers ? When more angle and faster response to friction is needed without losing control Rev Dominant Bowlers ? Creates shape and angle early in transitions, perfect for crankers and two-handers Specifications: Brand: Motiv Core Shape: Symmetrical Core Name: Motiv Detonator Core Coverstock: Pearl Reactive Cover Name: Propulsion MXV Pearl Reactive Radius of Gyration (RG - 15LB): 2.47 Differential (Diff - 15LB): 0.055 Mass Bias Strength: N/A Flare Potential: 4 ? 5 Inches Surface Finish: 5000 Grit Lane Conditions: Medium ? Heavy Oil Available Weights: 12LB, 13LB, 14LB, 15LB, 16LB Color: Black / Silver Scent: None Performance Level: High Performance