Cam and Groove Coupling Socket Body Material 316 Stainless Steel Type D Coupling Size 2 1/2 in Female Connection Type NPT Hose Fitting Size 2 1/2 in FNPT Max Working Pressure @ 70 F 150 psi Socket Inside Diameter 2 1/2 in Gasket Material Nitrile Overall Length 3 1/16 in Includes Locking Arm Yes Thread Size 2-1/2 in -8