For transfer of petroleum products fuel lines vapor emission lines and vacuum smog control. Fuel line:1/4 inch inside diameter (0.64 CM) and 1/3 inch outside diameter (0.8CM)??Hose Clamp for 1/4-inch and 3/16-inch Fuel Filter with an Inner Diameter of 2/5-inches The Fuel Lines are oil resistant,cold-resistant and ethanol tolerance;Custom Extra long 9.8 Foot Length (3M) can be cut to size for all your applications Designed for conveying gasoline, E-85, diesel, and bio-diesel, fuels in mowers tractors snow blowers dirt bikes and just about all small engines Package includes:9.8 Feet(3m) 1/4″ ID Fuel Line,20 X 2/5″ ID Hose Clamps is a professional outdoor product supplies brand knows what the most practical accessories to fit power machine equipment are.The quality of was proved by true test in most simple and considerate way.considers more on safety and practicability, pursuing to let all users enjoy the reliable products.