FJM says the Combi-Cam Ultra is the first combination cam lock with master key override and code retrievable capabilities. The Combi-Cam Ultra has 10,000 possible combinations available and master key access, allowing for dual access with both keys and combinations. It can be installed vertically and horizontally for locker applications, cabinets, drawers, storage, etc. The Combi-Cam Ultra comes in three cylinder lengths: 5/8 in., 7/8 in., and 1-1/8 in. (800) 654-1786, Combi-Cam.com, JMSecurity.com