Cam and Groove Adapter Socket x Plug Body Material Aluminum Type DA Coupling Size 4 in Socket x 6 in Plug Female Coupler x Male Adapter Max Working Pressure @ 70 F 75 psi Plug Outside Dia 6 15/16 in Socket Inside Diameter 4 in Gasket Material Nitrile Overall Length 6 15/16 in Includes Locking Arm Yes Plug Length 2 9/32 in