The X Series is all about giving serious golfers total performance with enhanced forgiveness for the ultimate in confidence. The new Callaway X-20 Irons deliver in every way by delivering technology, innovation and playability that will take your game to a new level. With its traditional styling and Callaway Golf core technologies, this iron provides the performance and forgiveness to play the game with enhanced confidence. The Progressive Wall Reduction System enables Callaway Golf engineers to lower the center of gravity 6 percent more than in the X-18 Irons for improved feel and playability. Extreme Notch Weighting redistributes weight to the extreme perimeter of the Callaway X-20 iron to create a high Moment of Inertia for greater forgiveness and more stability. VFT Technology maximizes ball speed and perimeter weighting for more distance and forgiveness. S2H2 increases discretionary weight by removing it from the hosel and repositioning it in the perimeter of the clubhead. Tru-Bore provides improved feel and clubhead control and a 360-Degree Undercut Channel 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.