The Launcher HB Turbo Irons deliver maximum forgiveness and a higher trajectory for game improvement players seeking more accurate, longer shots. Turbocharged Face: Each Launcher HB Turbo Iron features a turbocharged, high strength steel face that is thinner and hotter for increased ball speeds and explosive distance. Hollow Construction: Fully hollow construction along with internal stabilizing ribs provides ultimate forgiveness. HiBore Crown: The redesigned HiBore Crown features low, deep weighting to produce an easy to hit, high ball flight. Progressive Hollow Shaping: Progressive shaping provides a smooth transition from hybrid-like long irons to iron-like short irons. Its a seamless changeover with forgiveness where you need it and control where you want it.