HIGH QUALITY MATERIALThe 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 an inner diameter of 34-37MM.INSECT ANTI-ODORThe sink stopper has a self-closing anti-odor core that closes automatically when there is no drain, to isolate odors from bed bugs and prevent overflow.BUILT-IN FILTERUnlike ordinary drain plugs, this drain features an anti-clog filter that collects hair and prevents the drain from clogging, providing 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 FUNCTIONThe flush plug adopts a pressure spring, which can be closed and Open in a second, no more clogs or water leaks. It comes with silicone plugs that fit snugly into the sink drain holes to lock in moisture and prevent leaks.EASY TO INSTALLNo 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. Universal Sink Drain Features Automatic Open And Close: Anti-Insects, Anti-Protection. Filter plate: Collects Hair, Peels And Jewelry. Pressure Spring: One Push To Conveniently Drain, A Second Push To Store Water And Prevent Leakage. Note: The data are all manual measurement, please allow 1-3cm error, due to Due to the light and display difference, there will be some color difference, depending on the physical item received.