It is a real fuel pump nozzle, just like at a filling station. Handy for filling up containers with your liquid of choice. It even shuts off when the liquid reaches the end of the nozzle. No more over filling. When the trigger handle is squeezed, it flows with full force for quick fills, but you can pull less than all the way on the trigger handle to fill slower if you like. I really enjoy mine. Be sure to not leave it outside in subzero weather if dispensing a liquid that can freeze.