Volkswagen TDI Owners can prevent diesel nozzle/fuel filler neck mismatches. Designed to accommodate even outdated diesel fuel filling station pump nozzles- the TDI Diesel Fuel Nozzle Adapter fits the Volkswagen fuel filler neck at one end- and- with an outsized diameter at the other end- allows diesel fueling from larger nozzles found at Semi Truck diesel fuel stops with outdated pumps. Self contained in a sturdy carrying container. Includes complete instructions for use and non-latex- disposable gloves to help prevent skin contact with diesel fuel.