Features: Fuel Hose Type: AN-8 Black Nylon PTFE (Teflon) Made Fuel Line Inside Diameter: 10.8 mm (27/64") Outside Diameter: 14.7 mm (37/64") Pressure Rating: 1000 Working PSI / 5000 Burst PSI. Temperature Rating: -100F degree to 500F degree under most operating conditions. Fitting Material: High Quality 6061 Aluminum Alloy