Ping G730 Red Iron SetMaximizing distance was the primary objective in PINGs longest and most forgiving iron to date, generating typical distance gains of approximately five yards from the flexing, hyper 17 4 stainless steel face. Its not just distance but distance with max height and increased forgiveness for shots that hit and hold the green. Flexing Face By employing hyper 17 4 stainless steel through heat treating, we thinned the face and optimized its overall