Alloy Bee shackle Standard: European type .Jis type.Din type.U.SA type. Material:Stainless steel 304/316.Carbon steel. Alloy.Aluminum Size:From M6 to M48 Surface:Hot dipped galvanized,Electro galvanozed,self cloured. If you have special specification ,contact us . your Satisfaction isour power. By the way,You can get more information from our website. Welcome to contact us for more information.