Cam and Groove Adapter Socket x Plug Body Material Aluminum Type DA Coupling Size 4 in Socket x 3 in Plug Female Coupler x Male Adapter Max Working Pressure @ 70 F 100 psi Plug Outside Dia 3 19/32 in Socket Inside Diameter 4 in Gasket Material Nitrile Overall Length 6 5/16 in Includes Locking Arm Yes Plug Length 2 in