Conforms to EN 12320 CEN3. High security padlock designed to meet the highest CEN 3 standards. Hardened boron shackle that is much stronger than hardened steel. Re-keyable and fitted with the Squire five pin locking mechanism, which can be keyed alike or master keyed. Supplied with 2 keys. Shackle diameter 10mm. Shackle clearance: 16mm. Size: 50mm