CURT 45812 Adjustable Trailer Hitch Ball Mount, Fits 2 Inch Receiver, 7 1 2 Inch Drop, 6 1 4 Inch Rise, 1 Inch Ball Hole, 5,000 lbs. GTW dist finished for industry leading rust resistance Rated at 24 finished for industry leading rust resistance and tested to rigorous SAE J684 standards for safety The wheel chock lock can be used on your trailer or automotive vehicle such as a car It also features a total length of 12 1 2" Features an adjustable shank for maximum height flexibility Fits trailer hitches with a 2" x 2" receiver tube opening Adjusts in 1 1 2" increments for precise trailer leveling Shank can be flipped for a max rise of 6 1 4" and drop of 7 1 2" Equipped with a 1" hole to accept a trailer ball shank Hollow shank weighs less and can be used with an anti rattle kit CNC formed