The Hansen Global 3 Row Socket Trays are designed to accommodate shallow, semi-deep, and deep sockets all in one holder. Each post has a pad-printed socket size on it for easy identification. These trays are available in a 3/8" drive metric tray that holds 6-20mm (total of 45 sockets), 3/8" drive fractional tray that holds 1/4-1" (total of 39 sockets), 1/4" drive metric tray that holds 4-15mm (total of 42 sockets), 1/4" drive fractional tray that holds 1/8-5/8" (total of 39 sockets), and a four-pack that includes one of each tray.