This is the Du-Bro Large Scale Gas Fuel Valve. Du-Bro has produced a large scale fueling valve that features a unique press on dust cover that will help keep dirt and oil from getting into the valve. Designed to work with both 1/8" and 5/32" inner diameter tubing, this Large Scale Fueling Valve allows a higher volume of fuel to enter the carburetor and fill your fuel tank faster. Includes fueling probe.