ABUS Plastic-Covered Safety Padlock Our plastic-covered safety padlocks are completely insulated against electric shock, non-magnetic and non-sparking. Ideal for temperamental environments and confined-space applications.Body made of lightweight aluminium, insulated by a plastic coverShackle made of steel with NANO PROTECT™ coating, insulated by a synthetic cover.  Shackle length is 1-1/2" 6-pin cylinder for high number of key differsKey-retaining (Lock retains key until locked)Automatic locking for user convenienceAvailable in 10 different colours