These straight copper coupling fittings are widely used on water plumbing, air conditioner, heat pump system, hydraulics, and refrigeration system etc., they are good replacement for changing the direction of your copper pipeline.SpecificationMaterial: CopperColor: Copper ToneInner Diameter: 20mm / 0.8"Total Length: 28mm / 1.1"Wall thickness: 1.0mmPackage List: 8 × Copper Coupling FittingAdvantageCopper pipe fittings are made of copper material, which has good thermal conductivity, corrosion resistance, easy welding, stable performance and long service life. The surface is smooth and no burrs. The straight copper coupling fittings come with reel stops and sweat-wicking ends for easy connection.InstructionCleaning the connection surface, and then soldering to install. The reel stop and sweat end can help you connect more easily.