Featuring three distinct forged constructions within the set, the M-13, successor to the Pro 243, adapts performance across the bag, offering added distance and forgiveness in the long irons, as well as precision in the scoring clubs. This unique set makeup, a blend of compact, tour-preferred shaping, consistent ball flight, and Mizuno's signature feel with modern technology, lands the irons between a traditional player's cavity back and a player's distance iron. Merging Chromoly 4120 with 431 stainless steel, the long iron's Pocket Cavity Grain Flow Forged construction allows for Mizuno's thinnest-ever Contour Ellipse Face at just 1.37mm thick, approximately 35% thinner than the Pro 243. This design produces significantly higher ball speeds and increases forgiveness without compromising the responsive feel and feedback that Mizuno's forged irons are renowned for. Transitioning to the mid irons, where accuracy becomes more critical, a Micro-Slot Grain Flow Forged construction creates a 0.33mm thinner and more flexible face, delivering consistent and controlled speed enhancements. Finally, a single piece of elite steel and Mizuno's Grain Flow Forged HD process ensure precision, control, and unparalleled feel and feedback in the short irons. Mizuno Pro M-13 Irons Feature: Compact, tour-preferred profile designed for a consistent flight 3 Unique forging designs create added distance and forgiveness in the long irons, controlled distance in the mid irons, and precision in the short irons, all while maintaining superior feel 4 & 5-Iron: Grain Flow Forged HD 4120 Chromoly face, topline, and neck. 431 Stainless Steel back. Contour Ellipse CORAREA technology. 6, 7, & 8-Iron: Full Body Grain Flow Forged HD 4115 Chromoly face, topline, and neck. 431 Stainless Steel back. Micro-slot technology. 9, PW & GW: Pure one-piece Grain Flow Forged HD 1025 Elite Steel. Unparalleled feel and feedback. Triple Cut Sole: Sharp leading edge with a high bounce surface easily enters the turf w