3pc IIT 1/4 3/8 1/2 Drive METRIC Sockets Trays Holders Organizer Tools MM 71315 1pc 1/4" socket tray METRIC--4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15mm 1pc 3/8" socket tray METRIC--6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20mm 1pc 1/2" socket tray METRIC--10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27mm Designed to keep sockets organized but readily available Heavy duty molded plastic tray with drive stubs for both shallow and deep sockets