Size:Inner Diameter (ID):1/4 inch (6mm). OD: 0.47 inch(12mm),6.5FT,Please measure the size before purchasing.Working Pressure: The fuel line hose can withstand pressure 290 PSI, burst pressure 1160 PSI, temperature Range -40°F to 300°F.Quality: 1/4 Inch ID NBR fuel line hose is made of high quality nitrile butadiene rubber(NBR), high temperature resistance, corrosion resistance, wear resistance, not easy to aging and long service life.Fuel Line 1/4" ID NBR Hose Applicable Medium: 3/8 fuel line fit for small engine, it can work with diesel, biodiesel, gasoline, Oil, grease,water and air,etc.