New Trailer Alignment Kit Magnet Hitch Line Up For Boats, Campers, RV's and Trailers. A must have no-hassle way to quickly align your hitch with the trailer's. Telescoping rods extend to 42" When the brightly colored markers are aligned. You're ready to hook up. 13-1/2" minimum height, chrome plated finish to resist rust. A must have for easily connecting your trailer perfect by your self every time.