This pintle hook attachment can be mounted on any CURT adjustable channel mount and couples to a lunette eye or standard trailer coupler (adjustable channel mount not included). It features a 2-5/16" diameter trailer ball and offers a gross trailer weight capacity of 20,000 lbs. to accommodate a variety of large trailers. For long-lasting reliability, the trailer ball comes with a chrome finish and the pintle hook comes with a durable powder coat finish. Channel mount pins #45925 or locks #23556 are requires for mounting.