Curt mechanically de-scales all of their hitches before applying a thick powder coat finish leaving an attractive high-gloss, smooth surface. You will have no worries about your product rusting, as Curt features WeatherTite construction which seals the main body of the hitch. All Curt hitches come with mounting hardware and easy to follow installation instructions. Class 3 hitches have a 2 inches receiver opening, and rate up to 8,000 pounds gross trailer weight (GTW) and 800 pounds tongue weight (TW). Curt receiver hitches are backed by a limited lifetime warranty and a one year finish warranty.