Introducing the revolutionary peace of mind accessory for any parent or grandparent, the Rev-A-Lock. This security device is one-of-a-kind with powerful magnetic locks. The lock assembly can attach to wood, glass, metal, and particleboard cabinets for a guaranteed safeguard from curious little hands. To open the cabinet, simply hold the magnetic key against the cabinet door to disengage the lock. The RL Series also features an unlocking device that allows a disabling of the lock so cabinets can be opened without the key. These are the locks used for hidden gun shelves.