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-pin tumbler in both 50mm and 65mm versions giving over 250,000 key differs. The 50mm is version also available with a 5-pin tumbler. Available open and closed shackle. Keyed alike and master keyed available to order. CEN rated. Now available in customer focused packaging: @Work @Home @Leisure. CRIMESTOPPERS supported. The Squire SS50S Stronghold Solid Steel Padlock 50mm Keyed Alike has a 6 pin tumbler and offers upto 260,000 different key variations. It has a secuirty rating of CEN 4. Specification Body Width: 50.0mm. Body Thickness: 26.0mm. Shackle Diameter: 10.0mm. Vertical Shackle Clearance: 26.0mm. Horizontal Shackle Clearance: 22.0mm.