Callaway X-20 Tour Irons. New for Callaway's 2007 line-up. Callaway X Series irons have always been about performance and forgiveness. The Callaway X-20 Tour irons advance that heritage with design elements more accomplished players will relish. With a shorter blade length, narrower sole, thinner top-line and square toe, these irons have all the elements better players seek for increased workability, combined with Callaway Golf playability. The narrower sole, bevelled trailing edge, chamfered top-line and high toe of the X-20 Tour irons produce a more traditional look that will appeal to the highly skilled player. The shorter blade length and minimal offset offer enhanced workability. The heel design helps in reducing turf drag through the rough while the longer hosel helps strategically position the CG for optimum trajectory control. Extreme Notch Weighting redistributes weight to the perimeter of the iron to create a high Moment of Inertia for greater forgiveness and more stability. A 360-Degree Undercut Channel uses patented technology maximizes perimeter weighting by moving the CG lower and farther back in the clubhead, enlarging the hitting area and stabilizing the clubhead for more forgiveness.