High quality: zinc alloy hinges, rustproof, antibacterial, zinc alloy hinge, silver plated surface, for MDF toilet seat, wooden toilet seat, resin toilet seat. 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, Rubber washers are a large and durable rubber mounting nut with limited space. Easy Installation: This set comes 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 use in bathroom, hotel, public places, etc. Product List: 2*Hinges