Anderson Metals 57001 Brass Hose Fitting, Adapter, 1/2" Barb x 1/2" NPT Male Pipe One piece construction Use with plastic tubing or rubber hose Intended for use with hose clamp or crimp type ferrule Barbed edges provide positive connection Excellent vibration resistance 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.