The srixon z355 irons combine more distance maximum forgiveness and great feel in a mid high launching cavity back profilethin high strength ht1770 steel face increases cor for higher ball speeds in 4 7 irons iron bodies are 431 cast stainless steel for great feel and proven custom fitting adjustability high moi design for added forgiveness and stable flight direction action mass technology for effortless power tour vt sole for enhanced turf interactionaction mass technologysrixons all