The Ping I500 4 Iron features a stiff flex N.S. Pro Modus3 Tour105 steel shaft, making it ideal for right-handed golfers looking for precision and power in their shots. With a regular size and a length of 39 inches, this iron is designed to offer excellent control and feel on the golf course. The green dot on the club indicates that it is recommended for players with a faster swing speed, ensuring optimal performance for those with a stiff flex. Built by the trusted brand PING, this iron is a high-quality addition to any golfer's equipment arsenal.