Facom Plastic Storage Tray of 1/2" Drive Tools (PL.MBOXM) - this tray can be used by itself in your tool box or with plastic case BP.MBOXM for field use of your 3/8" drive tools. The case comes with Facom module sets MOD.S161-36 and MOD.SL161-36 and is used with a variety of case sets (see photo). Tray holds 23 tools...sockets, ratchets & drive accessories). It's one of the few trays these days that still has the markings for socket sizes.