CURT Adjustable Pintle Hitch Combination, 2-1/2-Inch Receiver, 6-Inch Drop, 2-5/16-Inch Ball, 20,000 lbs Model 45908CURT Adjustable Pintle Hitch Combination, 2 1 2 Inch Receiver, 6 Inch Drop, 2 5 16 Inch Ball, 20,000 lbs Model 45908 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.