Interstate Pneumatics FMS146 Brass Hose Fitting, Connector, 3/8 Inch Swivel Barb x 1/4 Inch Male NPT End Threads: 3/8 inch Swivel Barb x 1/4 inch male NPT End - Machined (Provides seal tight threads) Temperature Range: -65 F to 250 F Maximum Operating Pressure: 250 PSI Conformance: ASME, SAE, NPT Material: Brass - Excellent strength and ductility, corrosion resistance, low magnetic permeability