Our safety lockout padlock is made from reinforced nylon body and triple-coated hardened steel shackle. Shackle: length 38mm. Diameter 6mm. Material: A3 steel. Lock body: material nylon. a) Widely used in chemical, electrical, automobile industry, etc. b) Easily to be carried c) With rewritable warning signs. Wording can be custom made d) Key Retaining Feature (When the shackle is open, the key can not be removed) e) High Security 12 pin cylinder lock, up to 400000pcs different locking mechanisms.