what does a hitch clamp do?
HITCH CLAMP - HITCH COUPLING TIGHTENING CLAMP. 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, towing balls, motorcycle carriers, weight distribution hitches, flag mounts and just about any other receiver mounted accessory.