This key code series is used for files, desks and office equipment using Dominion Locks. NOT FOR MAILBOX APPLICATIONS Key will be precut and ready to work in the lock. A key blank is pictured to help with identification. Use the line drawing image of the keyway in this picture and compare it to the face of your lock. The grooving should match. The key you receive may look different. If you don't know which file cabinet key or desk key to order, let us help.