This particular adjustable ball mount is considered a class 3 ball mount and comes with an adjustable shank. Unlike other adjustable ball mounts that have fixed trailer balls, this one comes with a trailer ball platform with a 1" ball hole, allowing it to readily accept the trailer ball of your choice.
Features: - 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 1/4" - 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