IRON PING G730 POWER SPEC FUJIKURA SPEEDER NX 45 #5-9 PWMaximizing distance and making it easy to hit were the primary objectives in the G730, our longest and most forgiving iron to date. Typical distance gains of approximately five yards are generated 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.