10 Years ago, KBS Golf Shafts changed the way your Irons played and performed, now we are doing it AGAIN, with Graphite. Introducing the KBS TGI Tour Graphite Iron. The KBS Tour Graphite Iron is the first Graphite Shaft to play like KBS Steel with optimized weight and stiffness per player to gain maximum playability & performance. It is designed with the same E.I. curve as our KBS Tour Steel and is in every weight class to fit every player from Juniors to Women, to Tour Professionals.