Prevent rust from forming on the tow bar with the black Carpoint plastic towing hook cover with ring. The tow bar cap also ensures that your clothing remains free of grease if you accidentally touch the tow bar. Because of the ring around the tow bar, it can even be used if you have attached a trailer or caravan. The hitch cap remains on the hitch while driving, after uncoupling the trailer the cap can be put back in place.