Anderson Metals Brass Tube Fitting, Coupling, 3/8" Compression x 3/8" Female Pipe Three piece construction - nut, sleeve and body with attached insert Use with copper, brass, aluminum, or plastic tubing Standard fittings use short nuts Easy to disassemble no flaring tool required Primary uses water, gasoline, oil and vacuum lines 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.