Curt Manufacturing 60711 Towing Wiring Includes Double Lock gooseneck hitch #60615 and installation brackets #60632 Accepts up to 30,000 lbs. GTW and 7,500 lbs. vertical load limit Vehicle-specific design optimizes strength and installation time;Rubber hole cover helps prevent corrosion in trailer ball hole Removable chrome-plated 2 5/16" trailer ball fits most gooseneck trailers Double locking pins for superior trailer and trailer ball security