The 243 achieves its distance capabilities through two crucial pieces of technology. First, the irons are crafted from exceptionally durable 4120 Chromoly, allowing for a thinner, faster face. While this may seem like a simple solution, Grain Flow Forging this advanced material to exacting specifications and strength requirements is a technique requiring Mizuno's unparalleled skill and near century's worth of experience. Second, a Flow Microslot carved behind the face creates increased flexion at impact, producing a spring-like, speed-inducing effect. The slot progresses in size throughout the set with the long irons receiving the most distance aid.
Exceptionally compact players' profile with a smaller head size and thinner top line throughout the set Grain Flow Forged HD at Mizuno's iconic facility in Hiroshima, JapanMicrolayer of copper beneath Nickel Chrome produces the purest, softest feel, made famous in the legendary TN874120 Chromoly (4-7i) allows for a thinner face and combines with a Flow Microslot to boost ball speed1025E Pure Select mild carbon steel (8-PW) for ultimate precision and control where it's needed mostWrap Around Sole Grind provides consistent turf interaction and increased toe and heel sole relief for greater versatilityHarmonic Impact Technology produces a soft yet solid muscle-back feelFull Satin Brush finish for a sophisticated look with glare reductionSteel Shaft - Nippon N.S. PRO Modus 3 (105 Regular, 120 Stiff)
