The Callaway X-18 Pro Series irons are the player's version of the X-18's released the same year. The X-18 Pro's have less offset as well as a thinner sole with less bounce to improve workability. These notch weighted irons also feature Callaway's 360° Undercut channel that allows more weight to be distributed around the perimeter of the club. This weight distribution increases the Moment of Inertia to increase forgiveness and also allows the face to be thinner. The thinner face creates faster ball speeds. The end result is a longer, more forgiving iron that will appeal to the traditional eye.
