Unit has full piano hinges, easy-access slotted steel key racks with number guides, and numbered key control charts. Secure wafer tumbler lock. Each lock is keyed differently so no one key fits any other unit. Grey or putty textured steel construction, slotted in back for easy wall mounting. Durable molded plastic keg tags have large easy-to-read numbers and metal snap-hooks. Yellow Key Loaned tags are also included. Two keys included.