The henry squire ss50 hi security open shackle combi padlock is purpose designed for extra high security performance and extreme resistance against the threat of a sustained attack with the added convenience of no 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 s