Now, one fueling system that can be used with 4 different tubing sizes - 1/16", 3/32", 1/8" and 5/32" I.D * Ideal for cowled engines, lightweight, no leaks and can be used with glo-fuel and gasoline * The Fill It Fueling System features The Fill It Plug with handy knob for easy removal of fuel line to fill or drain your fuel tank * Comes with housing, 4 Fill It Fuel Line Plugs for different fuel tubing sizes, clunk and fuel tube for third line pick-up * Ideal for cowled engines, lightweight, no leaks, and can be used with glo-fuel and gasoline