A delux both side key cylinder is a type of lock that has a keyhole on both sides of the door. It is used for doors that need to be locked from the outside and the inside, such as storage rooms or offices. It has a 5-pin mechanism and a brass body Specification : Brass Computerized 5 Key ensure High Security, 7 Pin mechanism which have 7 lateral pin, Can be fitted any in euro standard mortice body, Mainly used in safety door, office / factory door.