The Pro Fli-Hi, a fixture with Mizuno's tour players, is an easy-to-launch, powerful long iron replacement. Featuring an upgraded 4335+ Nickel Chromoly hollow-body construction, the latest Fli-Hi delivers more speed and distance than its predecessor. Mizuno Pro Fli-Hi Utility Iron - Features: Nickel Chromoly 4335+ hollow-body construction utilizes a heat-treated, ultra-high-strength material for elevated ball speeds 26g of internal tungsten weighting low in the head increases launch Offset face weld allows for a thinner topline and greater flex and ball speeds low on the face Harmonic Impact Technology (HIT) significantly improves feel, mimicking a soft muscle-back Increased bounce angle by a degree for improved turf interaction Stock Shafts: Mitsubishi TENSEI 1K Blue, Mitsubishi TENSEI 1K Black Stock Grip: Golf Pride MCC Teams (Black/Grey) Authorised Mizuno Retailer