Taylor Made X-03 irons. Horrendously expensive when launched, the Taylor Made X-03 irons were designed so that each iron had a particular purpose. Long Irons 3 & 4 play like a utility iron. Titanium, hollow body with tungsten weight chip in sole. Middle Irons 5,6 & 7 for straight ball flight. Titanium face. Hollow, stainless steel body, tungsten weight chip in sole. Short Irons 8,9 & PW for control. Titanium face. Hollow, stainless steel body. Wedges AW, S for touch and feeling. Hollow, stainless steel body.