RF PROTO IRON Forged and precision machined on a CNC milling machine Shaped with sharp edges and little to no offset High-density tungsten toe weight positions CG behind hitting zone for excellent feeling shots with added stability on on-center hits COBRA CONNECT(TM) technology works with Arccos Caddie to track your shots Product of 33 revisions Copper finish Game-improvement iron: Medium-sized clubheads with lots of forgiving features while featuring a fairly classic profile at address