SPEED STARTS AT THE TOP A breakthrough in iron performance is achieved with our first ever carbon fiber topline, delivering an ultra low CG for maximum speed and launch. TECHNOLOGY PROGRESSIVE HEAD CONSTRUCTION The long irons, mid irons and wedges are designed with progressive head shapes, grooves, and hosel lengths to optimize launch and spin through the set. 1. CARBON TOPLINE LIGHT ZONE Carbon fiber inserts are 40% lighter than steel, saving 3 grams to move the CG lower and increase ball speed