The DEFENDER Armoured Warehouse padlocks provide extra protection by restricting the amount of shackle exposed and therefore not allowing the use of bolt croppers The shackles are hardened to provide extra reassurance The padlocks use a 5-pin cylinder to provide extra key security Designed for use with Roller Shutters but can also be used on standard hasps and staples Available in 2 sizes to meet most needs with option to have Keyed Alike suites for extra convenience Comes complete with 2 keys and a 2 year guarantee