These packs are from XFORT's premium chrome elegance range. They include a 65mm polished chrome mortice bathroomlock and a pair of 75mm (3") chrome ball bearing hinges. These packs are used with bathrom door handles (not supplied) to provide latching and locking where privacy is required. They are compatible with backplate, mortice knob and lever on rose door handles. They are suitable for all types of internal wooden doors.