Product Overview: More than fifty years of refining our Grain Flow Forging process in Hiroshima, Japan – ensure that Mizuno wedges are unrivalled for touch and feel around the green. Features: Grain Flow Forged HD: One-piece Grain Flow Forged HD from 1025E Pure Select mild carbon steel at Mizuno's iconic facility in Hiroshima, Japan – where Mizuno irons have been produced since 1968. 1025 Boron: A carbon steel that features 30% greater strength Harmonic Impact Technology: Fine tuned head geometry delivers ideal impact feel and feedback Quad Cut Grooves: Milled narrow/deep grooves optimized for stronger lofts and wide/shallow grooves optimized for higher lofts Hydroflow Micro Grooves: Laser etched microscopic grooves help channel away moisture for maximum spin in wet conditions Face Milling Lines: Increased   surface roughness to increase spin nearer the green Loft/COG Flow Design: The COG   of the wedge flows throughout the set to give more control and versatility Bounce Specific Sole Grinds: Matched   bounce and sole grind for an ideal level of versatility Loft Specific Head Shapes: Graduated   head shapes from pitching wedge to lob wedge ideally suited for how each   wedge is used Copper Underlay: Thin copper layer beneath a nickel chrome to provide a further enhanced impact feel