This Toyota RAV4, Lexus NX250, NX350, NX350h, and NX450h+ hitch is stringently tested in accordance with SAE J684 to ensure a weight carrying capacity of 4,500 lbs. gross trailer weight and 675 lbs. tongue weight. It is compatible with a weight distribution hitch to provide more stable towing and a weight distribution rating of 4,500 lbs. WD and 675 lbs. WDTW. It also features a 2" receiver tube opening to accept ball mount or other hitch accessory with a 2" x 2" shank.