Dynamic Sole Grind Material reduction on the back of the sole allows players to open the face with a lower leading edge for better contact on open-faced shots Oil Quench finish will rust over time * Original, Tour-Proven 588 Shape The most successful and preferred wedge shape ever, revered by golfers of all skill levels for its confidence-inspiring look, versatile design and all-around performance * Precision Forged from 1025 Carbon Steel Every wedge offers incredibly soft, yet solid feel, Premium manufacturing ensures highest level of part-to-part consistency for supreme confidence over every wedge shot * Advanced Spin Technology Tour Zip Grooves and Laser Milled Technology increase spin in accordance with USGA regulations