Cam and Groove Adapter, Plug, Body Material Polypropylene, Type A, Coupling Size 4 in, Female, Connection Type NPT, Hose Fitting Size 4 in, FNPT, Max. Working Pressure @ 70 F 75 psi, Plug Outside Dia. 4 23/32 in, Gasket Material EPDM, Overall Length 4 1/2 in, Includes Locking Arm No, Thread Size 4 in -8, Plug Length 2 3/8 in