It accommodates a wide range of sockets and attachments including regular, long, universal, and extensions
Has convenient carrying handle to carrying them to the job and avoid returns trips to the ones you forget
Easy to spot a missing tool
Tray loaded with tools is heavy enough to stay put without fastening in place, even when removing sockets from the rack. Rack tray is 6" x 18" metal frame with four 17" socket racks.