High quality: zinc alloy hinges, rustproof, antibacterial, zinc alloy hinge, silver plated surface, for MDF toilet seat, wooden toilet seat, resin toilet seat. < p>Corrosion resistance: the small screws are made of corrosion-resistant stainless steel, ideal for humid or low air circulation environments. Washers and nuts: Washers and Nuts: Rubber, The rubber washers make a large, durable rubber mounting nut with limited space. Easy Installation: This set comes complete with all fittings and should install easily, all you need is a screwdriver. The zinc alloy toilet lid can be used for a long time, without oxidation, corrosion, easy to clean. zinc alloy, rustproof, antibacterial, electroplated surface is not easy to fall off. Perfect for using in bathroom, hotel, public places, etc. Note: The data is all manual measurement, please allow 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received Delivery