Eaton Weatherhead Carbon Steel Flareless 7000 Series Ermeto Tube Fitting, Female Connector, 3/8" NPT Female x 1/2" Tube OD Adapts 3/8" NPT female threaded end to 1/2" tube OD flareless Ermeto-style connector Uses preset tubing sleeve for increased resistance to leakage due to vibration Carbon steel for durability and resistance to rupture under high pressure Zinc plated for resistance to corrosion 4,000 psi maximum working pressure