Are making my own, personal clubs for the past 2 decades and try to wanted to have fun with a purchased pair of irons. The past set I made and have used within the past many years were said to be Ping counterfeits which has a titanium face. the K15s have the same face this also is why I picked them. Best choice I ever produced. I'm a 9 handicap now score consistently within the low 80s high 70s. The K15 iron/hybrid set is ideal for golfers who benefit from a maximum forgiveness design. The titanium face and steel body from the Ping K15 Irons generates a higher moment of inertia for greater accuracy and consistent distance results over the club face. The wide-soled irons come with a low and deep center of gravity position to promote higher trajectories.