Heininger 6039 Advantage SportsRack Anti-Wobble 2" Hitch Bolt Kit;

The Anti-Wobble bolt kit by Advantage SportsRack enables you to secure your bike rack, cargo carrier or trailer securely to your vehicles 2 inch receiver hitch. The plastic retainer and nut slides into your standard 2 inch bike rack, cargo carrier or trailer and fastens securely to the existing 2 inch hitch with the included 5/8 inch threaded bolt and lock washer. Using the anti-wobble kit will eliminate rattling and play you may have using a standard non-threaded hitch pin. Securely tighten with a wrench and never worry about your load again. Keep your toys fully secured with the Advantage SportsRack 2 inch threaded lock.