Superior Electric Interstate Pneumatics FMS64T 3/8 Inch - 24 UNF Male x 1/4 Inch Hose Barb Connector for Inflator Whips 3/8 inch - 24 UNF Male x 1/4 inch Hose Barb Connector - 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