The revolutionary design of the LTDx Irons starts at the core. The construction features a multi-layer PWR-COR weighting system that lowers CG and promotes maximum flexion of the body, sole and face for peak ball speed and distance.PWR-COR TECHNOLOGYA multi-layer PWR-COR weighting system features a steel core bar that is suspended within a polymer injected casing. The design promotes maximum flex of the body, face, and sole at impact creating an elastic rebound effect that delivers powerful ball speed.PWRSHELL FACE DESIGNA forged face cup design increases ball speed across a wider area on the face.SPEED TUNED WEIGHTINGAn 8 gram toe weight enhances stability and can be adjusted down to 2g and up to 14g to dial in swing weighting for custom builds.COBRA CONNECTTrack your accuracy and distance using the Arccos Caddie app on your Smart Device.