The Hammer Maximum Effect is the next evolution of the acclaimed Hammer Effect, one of the most talked-about high-performance balls in recent years. Built around the proven Huntsman core that made the original a favorite, the Maximum Effect delivers explosive power and precision designed to take your game to the next level. Performance: High Performance Color: Black, Green, Purple, Silver Core Type: Asymmetrical Core Name: Hammer Huntsman Core Coverstock: HK22C GB15.1 Hybrid Reactive Cover Type: Hybrid Reactive Finish: : 1500 Grit Polish Weights: 12-16 lbs, Lane Condition: Medium to heavy oil Reaction: Strong mid-lane and backend Flare Potential: 5 - 6 Inches RG 2.47 (15lbs) Diff 0.050 Int diff: 0.017 (15lbs) Fragrance: None Warranty: One year from purchase date