Curt Adjustable Ball Mount, 2" Shank, 1" Ball Hole. 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, robotically welded and mechanically descaled for a perfect fit. Protected by a durable powder coat finish. Adjusts in 1-1/2" increments for precise trailer leveling.