The SQUIRE SS100 Stronghold Closed Shackle Dual Cylinder Padlock is purpose-designed for extreme resistance against the threat of a sustained attack. This seriously heavy duty padlock is constructed of a solid hardened steel lock body, which is capable of a tensile pull of over 24 tonnes, and a hardened boron steel shackle. Uniquely, the Stronghold® range features an electrophoretic finish for excellent corrosion resistance and can withstand even the harshest environments. This 100mm wide padlock is ideal for commercial premises where extra high security is a priority – it is the only padlock ever to achieve the Loss Prevention Certification Board (LPCB) SR4 Standard. The padlock comes complete with 4 keys, with the option of having the dual cylinder keyed alike to the same key (all 4 keys suit both cylinders) or dual cylinders keyed to differ on different keys (with 2 keys to suit each of the dual cylinders).