Cam and Groove Adapter Plug Body Material 304 Stainless Steel Type A Coupling Size 2 1/2 in Female Connection Type NPT Hose Fitting Size 2 1/2 in FNPT Max Working Pressure @ 70 F 225 psi Plug Outside Dia 3 in Overall Length 2 11/16 in Includes Locking Arm No Thread Size 2-1/2 in -8 Plug Length 1/2 in