Titleist Mens Ap2 714 Irons #4 - W1 Dynamic Gold Steel Right Stiff More carry distance from higher launching, low center of gravity long irons and thicker face, flatter launching short irons Solid feel through the set from the progressive center of gravity (lower in the long irons) Dual cavity design with high density tungsten weighting strategically placed for consistent ball speed on miss-hits and better distance control. Crisp turf release from the camber sole with pre-worn leading edge and beveled trailing edge