Squire SHCB high-security recodable combination block lock 4 wheel padlocks have a unique patented pull button combination recordable mechanism. The padlock have hardened steel rotating shackles ensuring high-cutting resistance, a solid brass lock body with hardened internal parts for extra attack resistance, encased in aesthetically pleasing black plastic and large solid brass wheels that are easy to use. Special pull button opening for extra security. Internal mechanism is treated to give reliable outdoor performance. Shackle diameter: 11 mm. Vertical shackle clearance: 15 mm. Horizontal shackle clearance: 20 mm. Measures 65 mm length by 19 mm width.Box Contains1 x Henry Squire SHCB65 Stronghold Recodeable Padlock 4 Wheel