This barb union coupling is made of brass and connects two hoses with different diameters in a straight run. This coupling has barbed connections on both ends for connecting two hoses. The barbed stems create a tight seal on the flexible and semi-rigid hose when used with a hose clamp or crimp sleeve or ferrule (not included). This fitting is made of brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability.
