If you own multiple trailers or frequently tow a variety of loads, you know how much time and money are spent tailoring your towing system to each and every individual trailer. There is nothing more inconvenient than switching back and forth between a few different ball mounts and trying to remember which mount fits with which trailer. A CURT adjustable ball mount is your multipurpose towing solution. This replacement shank for the adjustable multipurpose ball mount is compatible with the #45049 or #45799 and fits any 2" x 2" receiver tube opening. It features a gross trailer weight capacity of 10,000 lbs. and comes with a tough black powder coat finish for lasting rust resistance.