All CURT hitches feature WeatherTite® construction, which prevents rusting from the inside out by sealing the main body of the hitch. The receiver tube has an open back end to allow for easy cleaning and for dirt and moisture to pass through and not get trapped as is common with other brands of hitches. All CURT hitches come with mounting hardware and installation instructions. CURT is the only hitch company in the industry that mechanically de-scales all of our hitches before applying a thick powder coat finish, which is baked on for a high-gloss, smooth surface. CURT trailer hitches are simply the most attractive, most durable and toughest hitch on the market. You won"t find better quality and value anywhere! Please note this product does not ship to Pennsylvania. This item is compatible with the following vehicles: Audi * 2002 - 2008 Audi A4 Sedan * 2002 - 2008 Audi A4 Sedan - Including Quattro * 2002 - 2006 Audi A4 Avant All * 2002 - 2006 Audi A4 Avant Wagon - Including Quattro * 2003 - 2008 Audi S4 All - Except Convertible * 2004 - 2008 Audi S4 Wagon Volkswagen * 2003 - 2005 Volkswagen Passat W8 Only * Solid steel with powder-coated finish * 1.25-inch receiver tube * Drilling required * Set includes Euromount, pin, and clip * Manufacturer provides limited lifetime warranty