The Launcher HB Irons promote more distance and accuracy through a forgiving, easy-to-swing design. HB Irons promote closer proximity to the hole for golfers who struggle with height and distance. Hollow construction moves the weight deeper and toward the perimeter for a very high MOI and stable club head. This produces remarkably consistent ball speed and distance, even if you don't hit it in the center every time. High Strength HT1770 steel face is ultra-thin to flex more at impact and produce longer distances. The thin face also allows more weight to be distributed to the perimeter for more forgiveness. Long Irons are more Hybrid-Like in shape for improved forgiveness. Short Irons are more Iron-Like to promote control. GRAPHITE: MIYAZAKI C. KUA – This premium graphite shaft is crafted with the highest levels of precision. The lightweight design is easy to swing, while a stable low-torque stiffness profile enhances control and accuracy. STEEL: NEW DYNAMIC GOLD 98 – Dynamic Gold is the standard by which all other shafts are measured. This lighter weight version was created to increase club speed and help hit the ball higher.