Pop-Up Sink Stopper: The pop-up stopper with overflow function is suitable for basin hole diameter of 44-46 mm and the thickness of the built-in basin is 18-54 mm. High-quality material: the HOMELODY sink plug is made of a compression spring made of solid brass to ensure the durability and bounce of the drain, tested with up to 100,000 jump attempts. Anti-clogging filter: HOMELODY pop-up drain set sink has an integrated filter basket, the user can easily lift out the filter basket for cleaning to avoid clogging of the sewer channel, accidentally dropped necklaces, easy to catch. Double seal: double seal - no leakage for waterproof seal. Make sure the seals are installed in the correct position (see product manual) to effectively avoid leaks. Easy installation: overflow for washbasins due to the standardised connections and the completely included mounting accessories, assembly is even possible for amateurs.