HITCH CLAMP - HITCH COUPLING TIGHTENER Eliminates the hitch wobble at the junction of your bike rack / utility carrier / trailer hitch and your hitch receiver. A simple design that is easy to install and simple to use. The Hitch Clamp removes the "play" between your hitch-mounted carrier and your hitch receiver. Designed for use with almost all Cargo Carriers, hitch mounted bike racks, TOW balls, and just about any other receiver mounted accessory. 1 1/4 Clamp The 1 1/4 clamp is the same as our Standard Duty clamp, just sized down for the 1 1/4 receiver standard on many of the new SUVs. The Hitch Clamp in built from high strength steel and built for years of service. Installation is a snap with just one bolt to tighten down. Perfect for bike racks, utility racks, towing products or just about anything that can mount into a standard 2 inch receiver. Fits all makes and models of Trucks and SUVS with a 1 1/4 inch receiver. Proudly built in the USA Specs: - Clamp Plate: ⅜ inch high strength steel, black zinc coated - Receiver Slide: ¼ inch high strength steel, black zinc coated - Bolt and Nut: ½-20 Thread with lock nut, zinc coated