The Squire WS75S Stronghold Container Block Lock is a high security container lock with tamper-proof technology, purpose-designed for extreme resistance against the threat of sustained attack. It has a 80mm solid hardened steel lock body with an electrophoretic finish for excellent anti-corrosion resistance, even in challenging weather conditions. The 12mm diameter hardened boron alloy steel shackle rotates for extra anti-saw protection and ultimate security performance. Easy to operate, the rekeyable 6-pin, anti-bump, tumbler locking mechanism features anti-pick technology and offers over 260,000 key variations. Specification: Body width: 80mm. Body thickness: 25mm. Shackle diameter: 12mm. Vertical shackle clearance. * Hardened boron shackle with a solid hardened steel body * Rekeyable 6-pin cylinder * Highly attack resistant * Fits new and old-style containers * CEN grade 4 security rating All dimensions are as follows: Padlock Body Width x Shackle Diameter x Max. Interior Shackle Height. KA: Keyed Alike.