Product Size InformationThis pop up valve is suitable for drainage holes with a diameter of 1.3~1.5 inch /33~38mm, please confirm before purchase. High quality material ,Waterproof,Anti-rustPop-up sink Consists of the use of explosion-proof, crack-proof and thick high-quality stainless steel material is durable, rust-proof, corrosion and tarnish-resistant;Threaded thickened silicone gaskets to ensure the tightness, waterproof and anti-oxidation capabilities. Built-in Filter,Pop-up FunctionUnlike Normal Button Drain Pipes, This Drain Plug Has A Clog-proof Basket Filter, Which Can Collect Hair Cleanly And Prevent The Drain Pipe From Clogging. Keep items such as jewelry, rings, dirt, and so on out of the drain pipe. Tool-free assembly and disassembly: Take out the old filter element with your bare hands, and then put the new pop-up Item to complete the installation. Product Application OccasionsPop up valve pop up valve for vanity sink, most bathrooms and kitchen sinks, sink drain etc.