Most Samsonite suitcases come with a fixed TSA (Transport Security Administration) combination lock. You will need to set the combination on the lock to secure the suitcase, there is no key. There is a keyhole, however, this is only for TSA officers to open and close the lock for luggage inspection. Luggage locks approved by the TSA have a universal master key that will open the locks. Only the TSA have a copy of this master key.