This kit replaces corroded faulty door latch plates. The kit includes all four screws and latch plates. The kit is entirely zinc nickel plated. All the parts included in this kit are USED, we source rust free parts, sandblast, and plate the metal. These types of plated parts have been in use on our cars for over 10 years without showing any corrosion however we do not warranty the parts at all. The parts are in good used condition and freshly plated and 0 miles.