Security door full copper lock core

Material: Copper
Configuration: 2 + 6 iron handle keys

Instructions for the Use of A.B Locks Cylinder: A.B lock is a special new type of anti-theft lock designed with the theme of master safety. 1. A key is encapsulated in plastic package. Before the house is decorated and finished, the owner should not try to open it with A key, so as not to cause unnecessary trouble. 2. B key is provided for house decoration workers. 3. After the decoration of the house is completed, the owner accepts it for the sake of completeness. Take back the B key in time, and then insert the A key into the lock core to rotate 360 degrees, the B key will automatically fail.