Reese Towpower Reese 45322 Ball Mount 3" D X 10" Lx1-1/2 R Max trailer weight of 18,000 pounds and tongue weight of 2,000 pounds 2-1/2 inch square by 10 inches long for use exclusively with Titan receivers 3 inch drop and 1-1/2 inch rise Metal Shield finish fights rust and corrosion