Buyers ball mount fits 1 1/4in. square receivers (Class I and II). Solid steel construction with corrosion-resistant black powder-coat finish. Accepts towing balls with 3/4in. dia. shank. 3500-lb. maximum towing weight; 300-lb. maximum vertical load. Gross Towing Weight (lbs.): 3,000, Fits Receivers (in.): 1 1/4, Tongue Weight (lbs.): 300, Class Rating: I and II, Ball Mount Material: Solid steel, Ball Diameter Hole (in.): 3/4, Drop (in.): 4, Hitch Pin Included: No, Length from Center of Pin Hole to Center of Ball Hole (in.): 7