1 x Boxed Squire SS50S Stronghold Solid Steel Padlock 50mm CEN4. The Squire SS50S Stronghold Solid Steel Padlock 50mm has a 6-pin tumbler and offers up to 260, 000 different key variations. It has a security rating of CEN 4. Specifications: Body Width: 50.0mm.Body Thickness: 26.0mm.Shackle Diameter: 10.0mm.Vertical Shackle Clearance: 16.0mm.Horizontal Shackle Clearance: 22.0mm.