Blue Ox SWAYPRO Model BXW0750 Hitch - Tongue weight maximum 750 lbs with a Gross Towing Weight 8000 lbs & comes with a 2 - 5/16 " ball which you change if you have different ball size. Prevents swaying in all weather conditions, back up without disconnecting, quick hook up & disconnect. Check out the price of a new one, I payed $1065.00, Amazon has them on for $973.12 with taxes and no ball with it. Asking $500.00 OBO Free set of extension mirrors if you want them