T Built Adapter Hitch You have a ball in your truck and are looking for a way to pull your fifth wheel without all the extra hardware in your bed? Now you can use this adapter to convert your RV trailer to be pulled with a goose neck ball. Works with your B&W turn over ball, or any other goose neck hitch with a 2 5/16" ball. All hardware is included - grade 8 mounting bolts, washers, and lock nuts. This is is NOT adjustable, this is the 15” model, we do offer 3 different set heights (12", 15", 17"), you can select the one that is right for you. These adapters are built to handle whatever comes down the road. So use the measurements below to decide what is going to work best for you! -20,000 Pound Rating -Self-centering locking plate -2-5/16" Ball pocket -Coupler can be pad locked -Attaches to most standard king-pin boxes -Easy Installation Which adapter height is right for you? The best way to figure out the height you need is to back your truck under your camper and set the camper to the desired height from the top of the bed (usually from 6 to 8 inches). Measure from the top of the ball in your truck to the bottom of the king plate on your camper, match that measurement to the measurements described below to decide which height is right for your setup. 12" Adapter Hitch - Height from top of ball to top of mounting plate is 11 inches. 15" Adapter Hitch - Height from top of ball to top of mounting plate is 14 inches. 17" Adapter Hitch - Height from top of ball to top of mounting plate is 16 inches. If you need a different height than the item you are now viewing click on by T Built below the title above.