Use the same key on french patio doors or front & back doors - no need to carry 2 keys;British Standard kitemarked euro cylinder 6 pin cylinder - 6 hardened pins protect the lock;Anti-Bump, Anti-Pick, Anti-Drill & Anti-Extraction technology they also resist screw attacks;Enhanced Key security - over 30,000 key combinations, supplied with 6 keys;Tested to over 100,000 cycles recommended by Association of Chief Police Officers

• Yale Anti-Bump Keyed-Alike Pair of Euro Cylinders Nickel Plated 45/55 (100mm overall) - High security British Standard kitemarked locks with kitemark stamped on front - deters burglars, for patio the same key front and back, comes with a 10 year manufacturers guarantee. Made by Yale the industry leading name in home security. Available in a range of sizes and polished brass or nickel plated finish.
• 45/55 (40/10/50 Length 100mm)

Yale Anti-Bump Keyed-Alike Pair of Euro Cylinders Nickel Plated 45/55 (100mm overall) - High security British Standard kitemarked locks with kitemark stamped on front - deters burglars, for patio the same key front and back, comes with a 10 year manufacturers guarantee. Made by Yale the industry leading name in home security. Available in a range of sizes and polished brass or nickel plated finish.Yale