The Snap-on Tools Three Row Socket Tray is available in two models - 3/8" size (No. KA383) and 1/4" size (No. KA143). The 3/8" drive fractional trays hold 39 1/4-1" sockets, and metric trays have room for 45 6-30 mm sockets on clearly marked shallow, deep and semi-deep posts. Made for chrome or impact sockets, the trays come in red, gloss black, orange and green to match popular tool storage colors.