[Innovative Self Closing Design]:Our odor resistant drain core features 90 degree direct drainage by gravity.Once the water stops,the gasket automatically closes for seamless for operation [Great Clog Prevention]:Ideal for bathrooms,sinks,washing machines and more.Our drain backflow preventer completely seals the sewer to prevent hair accumulation and blockages.It also prevents unpleasant odors and sewer backflow,improving your living environment [Premium Material]:Our drain core is made of premium copper material that does not deform and is great at capturing debris.This ensures longevity and stable performance,making it a reliable addition to your home [Multifunctional Application]:Our drain check features an embedded design with a seamless appearance that fits various environments - bathrooms,kitchens,garages,balconies,swimming pools,toilets,basements etc.,providing an invisible solution that easily blends into your decor