The over ride lock is installed, includes a control key, user key and the combination. This is reversible for right or left hand.For doors 1 5/8" to 1 7/8" in thickness and 2 3/4 backset. A lock with the key over ride is a must when there in only one entrance/exit. Without the combination there is no way to know if the lock is operating properly. Combination it is a very involved process to reset the lock to accept a new combination. Back be removed, the lock disassembled, the combination chamber removed and the tumblers reset. FYI, if they don't have the keys a locksmith can not just make a key. The over ride lock core will have to. The item "Kaba Bronze 5000 5021 5031 Pushbutton Lock Over Ride Lock Installed withkeys" is in sale since Tuesday, February 5, 2019. This item is in the category "Business & Industrial\Building Materials & Supplies\Doors & Fixtures\Locks & Locksets". The seller is "bake98" and is located in Oxford, Pennsylvania.
This item can be shipped to United States.