Callaway xr steelhead xr irons are beautifully shaped and extremely playable for all levels of player callaway replicated some of the best design aspects from the original steelhead iron a slightly longer blade length a slightly more rounded toe and their signature hosel to face transition the terrific ball speed and distance of callaway steelhead xr irons is based their next generation 360 face cuptechnology which allows the edges of the ultra thin face to freely flex and release at impac