Reese Towpower Multiple-Ball Mount is designed to provide excellent mounting facility. It comes with 3 balls on one solid tube ball mount. Perfect for towing a variety of trailers with different sized couplers. The tri-ball mount has a 1-7/8" ball with a shank length of 7" (GTW/TW 3,500/350), a 2" ball with a shank length of 8" (GTW/TW 7,500/750) and a 2-5/16" ball with a 8" length (GTW/TW 10,000/1,000). Lengths are measured from the hitch pin hole to the center of the ball. Overall length is 12". It features a black finish and a metal shield which is rust as well as corrosion resistant.