HIGH QUALITY MATERIAL The sink is made of high quality stainless steel and brass, durable, rustproof and resistant to deformation, compatible with most drain holes on the market, suitable for drain holes with a diameter inside 34-37 MM. ANTI-INSECT AND ANTI-ODOR The sink stopper has a self-closing anti-odor core that closes automatically when there is no drain, in order to isolate bed bug odors and overflow. BUILT-IN FILTER Unlike ordinary drain plugs, this drain features an anti-clog filter that collects hair and prevents the drain from becoming clogged, allowing for efficient filtration. If jewelry or rings accidentally fall into the drain hole, don't worry, the built-in filter will help you find it. POP-UP FUNCTION The flush plug adopts a pressure spring, which can be closed and opened in one second, more obstruction or water leakage. It comes with silicone plugs that fit snugly into the sink's drain holes to trap moisture and prevent leaks. EASY TO INSTALL No tools required, easy installation with bare hands. Just remove the old bounce-core and install a new one. Thanks to its simple design, anyone can install a pop up sink strainer. Suitable for bathtubs, bathrooms and kitchen sinks, etc.Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and weather. display, there will be a certain color difference, the actual object received shall prevail.