TAYLORMADE STEALTH UDI IRONPerformance Driven Shape Stealth UDI is designed with a Tour inspired shape and traditional look in the playing position. The center of gravity (CG) has been positioned for a penetrating ball flight while creating the spin required to shape shots. Forged Hollow Body Construction Engineered with an ultra thin forged 4140 face and Inverted Cone Technology to create a flexible face, Stealth UDI delivers a large sweet spot for maximum distance,