The Squire SS50 50mm Hi-Security closed shackle combination padlock is purpose designed for extra-high security performance and extreme resistance against the threat of a sustained attack, with the added convenience ofno keys to lose. These padlocks have a unique electrophoretic finish and body cover for excellent corrosion resistance, the range performs in even the harshest environments (200 hour salt spray tested). They are constructed of a solid hardened steel lock body and hardened boron alloy steel shackle - with a protective lock body cover. They operate using a fully recodable five-wheel dial with 10 digits - from zero to nine which offers over 100,000 code combinations. These padlocks are simple to recode and can be coded 'alike' so one code opens several locks, which makes them ideal for multi-users operating in high security or commercial environments. Ideal for securing commercial buildings, gates, warehouses, lorries, perimeter gates, trailers and high security doors. Bo