It is made of zinc alloy material, with low melting point, good fluidity and easy welding. The small screws are stainless steel and will never rust. Plenty of nylon washers and adjustable accessories to ensure a tight fit. Hinge zinc alloy, silver-plated surface, used for MDF toilet seat, wooden toilet seat, resin toilet seat. Very suitable for use in bathrooms, hotels, public places, etc., Manufacturer: Shun Yingtong