Simple on/off air-cooled carburetor fuel tap for 49cc mini pocket bike engines. The white part is the ball valve which turns left or right to allow the fuel to be either ON or OFF. It locates to the mini moto carburetor by 2 screws and a small washer. Fits for many air-cooled models including the Mini Quad ATV, Mini Dirt Bike models, Mini Racing Bike, and Mini Motard models.