Coupling heads for trailers; Dollies; Handle extensions for a wheelbarrow for enhanced lifting leverage; Handlebars; Hooks specially designed for use in vehicles to hold vehicle accessories; Luggage racks for bicycles; Luggage racks for motor cars; Metal locking device for trailer hitch couplers; Racks for vehicles for bicycles, skis, guns, luggage; Tow bars for trailers; Trailer hitches; Trailer hitches for vehicles; Utility hitch trailer designed for use as a portable picnic platform equipp...