Experience a smoother ride when towing with the Receiver Air Shocker Package with Combo Mount from Shocker Hitch. The unit fits a standard 2-inch receiver tube and slides in easily. A 2 1/2-inch shank for use with Chevrolet/GMC trucks is available. The package has a 2- and 2 5/16-inch combo mount and is rated to 12,000 pounds towing capacity with 1,200-pound tongue weight. Additional attachments such as a pintle hook are available.