This Enerpac C-604 is a quick-disconnect hydraulic coupler for shut-off when disconnected. It is made of steel for strength and durability. The socket has a 3/8 male National Pipe Taper (NPT) threaded connection on one end for connecting to a female hose fitting and a coupler connection on the other end. The plug has 3/8 male NPT threads on one end for connecting to a female hose fitting and a coupler connection. The maximum working pressure is 10,000 pounds per square inch (psi). This quick-disconnect coupler comes with dust caps for protection against contaminants and is suitable for hydraulic applications including cylinders, tools, and pumps.Hose fittings connect, control, change the direction of, and terminate the flow in piping and hose systems. They are made of brass, stainless steel, galvanized steel, and other materials that resist corrosion, pressure, and wear. Hose fittings have various types of connections, including threaded, barbed, push-to-connect, dry disconnect, and others including those based on internationally-accepted specifications. Hose fittings are used in systems such as air compressors, automatic manufacturing operations, aircraft controls, and tire installation in industries including agriculture, mining, road construction, firefighting, and aviation.Enerpac manufactures high-pressure tools and equipment for industrial applications. The company, founded in 1910, is headquartered in Menomonee Falls, WI.What's in the Box?Socket (CR-400)Plug (CH-604)2 Dust caps (CD-411) Quick-disconnect coupler for shut-off when disconnected Steel for strength and durability 3/8 male NPT threads on one end for connecting to a female hose fitting and 3/8 female NPT threads on the other for connecting to a male fitting Maximum working pressure of 10,000 psi Dust caps for protection against contaminants UPC 662005201082 ASIN B001HWEDVW Size full size Color Black, Silver Set Name Enerpac C-604 Set (Socket, Plug, 2 Dust Caps) Brand Name Enerpac Unit Count 1 Count Item Weight 363 g Thread Type NPT Manufacturer Enerpac Model Number C-604 Material Type Alloy Steel Connector Type Coupler Exterior Finish Brass Item Dimensions 1 x 1 x 1 inches Number of Packs 1 Number of Pieces 1 Included Components Quick Connect,Set,3/8 ,3/8 -18 Manufacturer Part Number C604