This replacement ball and pintle combination head offers versatile towing options and is designed to fit the CURT adjustable channel mount #45908. It features a standard 2-5/16-inch diameter trailer ball to fit any 2-5/16-inch trailer coupler. With its integrated spring-loaded arm, the ball-pintle combination can also be coupled to a 2-1/2-inch or 3-inch lunette ring (inside diameter). NOTE: Includes pintle attachment only. Channel mount sold separately. This product is protected by U.S. Patent #: 11,628,698 / 11,660,916  / 8,033,563.