Titleist ZM Forged Iron Set 3-PW with Steel Shafts: Titleist ZM Forged are high performance, muscle back forged irons with traditional feel, superior looks and shot control for the highly skilled player. The contemporary Z muscle design precisely distributes weight from the heel into the toe, locating the center of gravity in the center of the face for solid feel. The traditional profile of the ZM Forged irons includes minimal progressive offset for Tour validated ball flight, trajectory control and workability. The high performance, narrow sole reduces skipping in firm conditions while appropriate bounce reduces digging. ZM Forged irons also feature dual hosel lengths with a shorter hosel in the long irons to bias weight low for improved launch and a longer hosel in the mid and short irons to manage flight.