This compact, molded plastic tray easily fits inside most desk drawers—plus, it's portable. Each tray can hold up to 56 keys, with 8 panels each with 7 hooks. For increased organization, each hook comes with two key tags—a self-locking tag for master keys and a standard snap-hook key tag for duplicates. If you ever need more hooks, the system can be easily expanded by simply adding additional drawer units.