Locking Hitch Pins from Buyers Products help prevent trailer theft. They work like standard hitch pins, but with a deadbolt style lock in place of a cotter pin. The Locking Hitch Pins are available in three sizes to fit 1.25 in., 2 in., 2-1/2 in., and 3 in. receivers. The lock portion has a powder-coated finish, and the pin features a chrome-plated finish. Both finishes provide superior wear and corrosion resistance.