Ping i59 Iron Set (Right-Handed)Ping i59 Iron Set The Ping i59 Iron Set features an aerospace grade AlumiCore aluminum insert paired with a forged 1025 carbon steel body with a 17 4stainless steel laser cut face. Combining these performance technologies provides crisp, consistent impact with flighted trajectory and reliable distance. Throughout the development of the i59 iron, Pings innovation and engineering teams worked towards perfecting the manufacturing process for in depth