This accessory for the Turnoverball Gooseneck Hitch allows you to tow a gooseneck trailer that has an inverted 2-5/16 inch ball. Simply insert the Inverted Ball Adapter into your B&W Turnover Ball Gooseneck Hitch, remove the pin and lower the inverted ball on the gooseneck trailer into the adapter. Replace the pin and you're ready to tow.