Cam and Groove Coupling, Socket, Body Material Aluminum, Type D, Coupling Size 4 in, Female, Connection Type NPT, Hose Fitting Size 4 in, FNPT, Max. Working Pressure @ 70 F 250 psi, Plug Outside Dia. 6 25/32 in, Socket Inside Diameter 4 47/64 in, Gasket Material Nitrile, Overall Length 3 7/16 in, Includes Locking Arm Yes, Thread Size 4 in -8. This item has been restricted from sale in the following state (s): []