These elbow brass pipe fittings are used for connecting two pipes at a specific angle. Applied for copper, brass, steel, or other tubing. Widely used in various industries, including LP, refrigeration, hydraulics, instrumentation, fuel, grease, air, water, oil, and gas systems.Advantage:Precise thread ensures the fittings bite better, tighten firmly, and are not easy to slip. Made of solid brass material, this brass pipe fitting is anti-corrosion, has ductility at high temperatures, has low magnetic permeability, has high hardness, and is durable.Instruction:Easy removal and installation. Screw the brass pipe fitting into the threaded pipe and tighten it with a wrench.NOTE:One end is the flare thread size, another is the male NPT thread.Please check the size before purchasing.