OVERVIEW: Mizuno Pro 243 irons feature a refined, cavity-back head that brings enhanced ball speed and launch for elite players. The patented Grain Flow Forging process is paired with Chromoly technology to produce a tour-level iron profile with extremely high ball speeds. A new sole grind is introduced to improve turf interaction and ball flight, even from less-than-ideal lies. The copper underlay beneath the Nickel Chrome finish offers a pure, soft feel and sound.