USAG 3/8" Drive Fractional Socket Set (with Foam module tray)(MODM.JU11) - compact module tray with 11 USAG fractional sockets (1/4" - 7/8"). Can be used openly in a tool box/trolley with other module and case sets or stored in a Facom/USAG small MBOX case for "grab and go" use in the field. USAG sockets have a more pronounced knurl for easier grip than Facom sockets (see photo).