This Eaton Weatherhead 1070X4 90-degree tube and pipe elbow fitting is suitable for connecting tubes and pipes at a 90-degree angle in pneumatic and fluid transfer applications. It is made of CA360 brass for strength and resistance to corrosion. It has 1/8" female National Pipe Taper (NPT) threads on one end and a barbed tube insert on the other for use with 1/4" outside diameter (OD) plastic tubes. This 90-degree tube and pipe elbow fitting is suitable for use in temperature control circuits, coolant transfer systems, vacuum systems, and other industrial applications.Tube fittings are components used for connecting, branching, terminating, and changing the direction of tubing in pneumatic and hydraulic systems. They are made of brass, stainless steel, PBT (polybutylene terephthalate), and other materials that resist corrosion and wear. Tube fittings have various types of connections, including threaded, welded, barbed, and push-to-connect (also called one-touch). Push-to-connect connections do not require tools or sealants. Tube fittings are used in various applications, including machine tools, airplane and truck controls, and automated production lines, among others.Eaton manufactures electrical, hydraulic, and mechanical power equipment. The company, founded in 1911, is headquartered in Dublin, Ireland.