High quality: zinc alloy hinges, anti-rust, 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 airflow environments. Washers and nuts: Washers and nuts: rubber, The Rubber washers make 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, anti-rust, antibacterial, electroplated surface is not easy to fall off. Perfect for use in bathroom, hotel, public places, etc. The toilet seat fixings are made of high quality zinc alloy with a polished finish, rust and corrosion resistant, built to last. Comes with a full set of mounting accessories for direct installation. High quality material The zipper is made of zinc alloy, it will not rust, which ensures quality and longevity. Great compatibility Ideal for replacing old or broken toilet lid hinges and fits most standard toilet lids with top zipper. p> High flexibility Easy to swing up and down, flexible and easy to use, easy to install on the toilet lid.