An additional lock of higher reliability with a disk mechanism of secret for apartment doors and rooms with high demands for security.

   The cylinder mechanism of secret with increased number of key combinations is designed and being produced under license of "ABLOY" company (Finland). The design of the lock allows to mount it on a door of 35-50mm thick. Two vertical moving cylindrical deadbolts make it impossible to pull off the door from the door frame. When the key is inserted into key hole from the inside it is impossible to release the lock with the key from outside. The lock is completed with 4 keys.