The MP-H4» is a revolutionary new iron that offers the most forgiveness and playability Mizuno has ever introduced to the better playerÍs market. This iron set features seamless blending of iron type hybrid long irons to half-cavity scoring irons. All irons throughout the set are made with our patented Grain Flow Forging process for a soft, solid, consistent feel. Through use of advanced Computer Animated Design (CAD) simulation, Mizuno engineers created an iron set which consists of three different iron designs that deliver near the legal limit COR and deep COG which deliver long, consistent distance and an easy, high launch, hollow mid irons that offer a medium level COR and very large Sweet Area for controlled distance and forgiveness, and compact half-cavity scoring irons for precision and trajectory control. Each of the three head constructions are seamlessly blended for feel, trajectory, and ball control. The MP-H4 is like no other MP iron Mizuno has ever made before. Advanced Hybrid Flow Design from Grain Flow Forged hollow long irons to one piece grain flow forged half cavity scoring irons. Scientifically designed to optimize sound and feel at impact utilizing Modal Analysis software and MizunoÍs Harmonic Impact Technology. Strategically placed trailing edge bevel allows for a wider sole and deeper COG for easy launch and forgiveness, while delivering Tour confirmed turf interaction. Modified U-grooves produce the ideal spin rate for maximum playability in all conditions.