The Buyers Products part number RB2516 is a 2-5/16 inch Replacement Tow Ball. This chrome-finished tow ball is made of carbon steel and is specifically designed to fit Buyers Products RM6 and BH8 Series combination hitches. It includes a zinc-coated hex jam nylock nut and is rated for a maximum gross trailer weight of 12,000 pounds, making it suitable for towing heavy loads.