This is the mechanism inside the door that is operated by the handle;Most likely to the problem when a lock fails;Centre case can be re-attached to the old locking strip;More cost effective than replacing the whole multi point lock;Can fit right and left hand side doors

• Fullex Type A Door Lock Centre Case/ Gearbox/ Mechanism - 37mm Split Spindle - Door Lock Centre Case/ Gearbox/ Mechanism 37m Backset / 68 PZ

Fullex Type A Door Lock Centre Case/ Gearbox/ Mechanism - 37mm Split Spindle - Door Lock Centre Case/ Gearbox/ Mechanism 37m Backset / 68 PZFullex