Flare brass pipe fittings: Use for corrugated gas lines. Thread adapter. Made of brass. Male Connector, Flare, Tube Size 1/8、1/4、3/8、1/2、1inch. In, Pipe Size 1/8、1/4、 3/8、1/2 、1inch In, Tube x NPT Connection, Material of Brass, Pressure (PSI) 750, Temp Ra