Features: Brand new and high quality Steel: all washers door hinges 304 Steel, which provide good corrosion resistance in bad environment , cold weather and humidity. Washers corrosion-resistant, rustproof, hardness, is not easy to break, wear-resistant, good toughness, a smooth surfaces and oxidation protections. Standard safety: washers, suitale for daily use and maintenance. Washers can provide a flat contact surfaces and increase contact surfaces, protect part and screws. Also door washers during operations, not cause surfaces frictions and prevents the surfaces wear of part. Easy to use: spacers Steel assortment very install, the surfaces of flat seal set is smooth. Sealing mainly used to reduce pressure and reduce frictions, prevent leakage, insulate, prevent loosening distribute pressure. Clamping packed in a plastic storage box. Wide applications: Steel washers often used in instrument, mould processing, household and mechanical device. For example: home repair, furniture manufacturing, door, outdoor projects, crafts, shipping equipment, applications, etc. If you have any question about our fitschenring, please contact us. Specifications: Material: Steel Package Includes: 648Pcs Flat Washer Set note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.