TMS Anti Rattle Tilt Bracket 2" Hitch Wobble Cargo Bike Rack Wheelchair Carrier Hauler Reduces wobbling (rocking motion) of hitch mounted products. Works with cargo carriers, motorcycle carrier bike racks and other products that go into a 2" trailer hitch. Used with class III hitch to prevent wobble when using a hitch mounted carrier or other product by pinching the main hitch tube of towing product firmly into the trailer hitch receiver attached to your vehicle.