Security Lock - additional locking to increase security suitable for households of the elderly or households with children, BENEFITS: knob control from the inside of the door without the use of a key, unified control of both locks with one key, suitable for right and left doors, for doors with a door leaf thickness of 40-45mm, secured 2 steel mandrels with O 8mm, 5 tumbler system of cylindrical insert FAB 220RS, comes with 3 keys and an identification card, with increased resistance to drilling