Made from reinforced laminated steel to withstand severe physical abuse and come with a hardened steel shackle making them extremely difficult to cut. Body plates are individually coated for superior rust protection. 5-pin cylinder offers more unique key cuts and better tamper resistance than conventional 4-pin locks. Coloured bumpers can be used for identification and protection and custom stamping is available. Padlocks are available keyed different. Key retaining (Key won't release until the padlock shackle is securely closed). Meets standard UL 94-HB.