Buyers Products heavy-duty ball mount fits a 2in. receiver. 1in. ball hole. Gross load 6000 lbs., tongue load 600 lbs. U.S.A. Ball Diameter Hole (in.): 1, Shank Length (in.): 6 1/2, Gross Vehicle Weight Rated (lbs.): 6,000, Weight Capacity (lbs.): 600 Maximum Lift 2 3/4in. Maximum Drop 4in. Shank Length 6 1/2in. 2-piece welded aluminum construction