For 50cc GY6 139QMB engines Fits most 50cc scooter carbs Everything you need Save money This carburetor repair kit is used on most Chinese QMB139 GY6 50cc scooter carburetors This kit includes float, gasket, fuel pin, fuel pin nozzle, main fuel jet, fuel volume regulation screw, and float valveDescription This carburetor repair kit is used on most Chinese QMB139 GY6 50cc scooter carburetors. This kit includes float, gasket, fuel pin, fuel pin nozzle, main fuel jet, fuel volume regulation screw, and float valve.It has everything you need to get your scooter or ATV running smoothly after long periods of storage or exposure to contaminated fuel.