The Curt Class 3 Trailer Hitch is the most common type of trailer hitch installed on full-size pickup trucks and SUVs. It is also popular on crossovers and mid-size trucks. Curt class 3 hitches range in gross trailer weight capacity from 3,500 lbs. to an impressive 8,000 lbs. and offer a comparable tongue weight capacity ranging from 350 to 800 lbs. These hitches are engineered to be strong and capable, having a quality steel frame in round tube or square tube form. Class 3 trailer hitches are able to tow most standard size trailers, including utility trailer, boat trailers, campers, single-horse livestock trailers and trailers designed to haul ATVs, personal watercraft, snowmobiles and other similar recreational vehicles. This type of hitch uses a 2" x 2" receiver tube opening to accept a ball mount or towing accessory with an equivalent shank. One special feature about the class 3 that is not found in classes 1 or 2 is its compatibility with a weight distribution hitch. When used in combination with a WD hitch, the class 3? s weight ratings increase, giving it more towing power. The gross trailer weight capacity increases to 12,000 lbs. and the tongue weight capacity to 1,200 lbs.Curt class 3 hitches are put through strenuous testing before they are deemed ready for market. They also come with two coatings a liquid Bonderite coating and a powder coat in high-gloss black that cure together to form a strong resistance against rust, scratching, UV damage and other wear.