1 x Boxed Squire SS50CS Stronghold Solid Steel Padlock 50mm Closed Shackle CEN4. The Squire SS50CS Stronghold Solid Steel Padlock 50mm Close Shackle 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: 16.0mm. The Squire Solid Hardened Steel Padlock combines compact design with market-leading product performance in the 50mm version, while the 65mm are tested to the highest CEN grades 5 and 6. All models are designed to resist the harshest of attack, these locks function reliably in the worst weather conditions. Hardened Boron alloy steel shackles. Re-keyable 6-pi.