CAM AND GROOVE COUPLING, SOCKET, BODY MATERIAL ALUMINUM, TYPE B, COUPLING SIZE 3 IN, MALE, CONNECTION TYPE NPT, HOSE FITTING SIZE 3 IN, MNPT, MAX. WORKING PRESSURE @ 70 F 125 PSI, SOCKET INSIDE DIAMETER 3 41/64 IN, GASKET MATERIAL NITRILE, OVERALL LENGTH 3 25/64 IN, INCLUDES LOCKING ARM YES, THREAD SIZE 3 IN -8