Anderson Metals Brass Hose Fitting, Union, 3/16" x 3/16" Barb Union coupling for connecting two hoses with the same diameter in a straight run Connects to a hose on both ends Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability Barbed fitting for a tight seal on hoses These fittings contain lead and are not allowed by federal law to be installed for potable water use in the U.S.A. and its territories.