Reese Towpower 51200 Class III Custom-Fit Hitch with 2" Square Receiver opening REESE trailer hitches are designed for a perfect fit and a great look. Hitch box opening measures 2 inches Tongue Weight is rated up to 400 Lbs. Gross Towing Weight is rated up to 4,000 Lbs. Featuring Metal Shield protective coating for increased corrosion resistance Attractive black powder coat is weather and rust resistant