Cam and Groove Coupling Socket Body Material 304 Stainless Steel Type B Coupling Size 3 in Male Connection Type NPT Hose Fitting Size 3 in MNPT Max Working Pressure @ 70 F 200 psi Socket Inside Diameter 3 5/8 in Gasket Material Nitrile Overall Length 89.5 mm Includes Locking Arm No Thread Size 3 in -8