CASOMAN 80-Piece Portable Socket Organizer Tray, 1/4-Inch, 3/8-Inch, 1/2-Inch Tool Trays, Heavy Duty Socket Organizers Rack, Black Rails with Red Socket HoldersHeavy duty durable socket holders made of quality material (ABS rails and clips, steel tray), last for years. Spring loaded ball bearings on each clip hold sockets firm and secure. Holds up to 80 sockets: 26 x 1 4" clips, 30x 3 8 clips, 24 x 1 2" clips. A quick and easy way to organize cluttered toolboxes and work areas. Works with all shallow or deep, Metric or SAE (Inch) Drive sockets.