Cam and Groove Adapter Plug Body Material Aluminum Type A Coupling Size 3 in Female Connection Type NPT Hose Fitting Size 3 in FNPT Max Working Pressure @ 70 F 125 psi Plug Outside Dia 2 3/4 in Overall Length 2 3/4 in Includes Locking Arm No Thread Size 3 in -8 Plug Length 2 1/32 in