Grain Flow Forged HD One-piece Grain Flow Forged HD from 1025E Pure Select mile carbon steel at Mizuno's iconic facility in Hiroshima, Japan. Where Mizuno irons have been produced since 1968.
1025 Boron A carbon steel that featurs 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