Cam and Groove Adapter Socket x Plug Body Material Aluminum Type DA Coupling Size 3 in Socket x 4 in Plug Female Coupler x Male Adapter Max Working Pressure @ 70 F 100 psi Plug Outside Dia 4 45/64 in Socket Inside Diameter 3 in Gasket Material Nitrile Overall Length 6 39/64 in Includes Locking Arm Yes Plug Length 2 1/16 in