Extended length heavy duty receiver lock. Push to Lock™ locking mechanism - push lock body onto pin firmly and remove key. 3-1/8 in wide shaft fits late model trucks equipped with heavy duty tow packages. Stainless steel for corrosion resistance. Fits 5/8 in receiver holes. Swivel Head™ design for easy access. Retail packaging, shelf pack quantity 4, master carton quantity 24. Master Lock® Extended Length Receiver Lock, Keyed Different, Series: Barbell™, 5/8 in Diameter Hole, Stainless Steel, Natural