Fine Filter Holes: This drain plug is anti-clogging filter inside, the filter is more dense and effective against clogging, than drain plugs. Thus, no objects such as rings, jewelry, dirt, etc. does not enter the drain. Two Gaskets: Optimized and improved drain plug, increased on 2 gaskets, it is suitable for drain holes with an inner diameter of 34-40mm, to avoid common problems such as inconsistent size and insufficient adaptations. Fits most sinks. Rust and Corrosion Protection: The drain plug core is made of brass, the spring is thick, and the service life is long. The basket is galvanized with ABS plastic to effectively prevent rust and corrosion caused by sewage and oil stains. Easy to use: no need to replace parts. drainage, simply remove the original copper core, insert our drain plug, gently shake the drain screw to insert it into the drain hole, press the switch to close the tank and water flow. Cleaning and odor removal: With the removable basket design, remove the plug and remove the basket, you can easily remove foreign matter - It can also prevent the drain channels from emptying and avoid peculiar odors. Washbasin with rebound system Suitable for an inner diameter of 34-40 mm. Materials: Stainless Steel (Main Body), Brass (Bounce Core) + ABS Plastic (Basket) Tip: Not all sinks are compatible with sinks with a 34mm-40mm drain hole. Please measure the diameter of the drain hole before purchase, so as not to waste time. Contents: 2 sinks with seal from 34 to 36. 2 sealing rings from 37 to 40 mm. Push-In Bottom Sink - Specific Steps: 1: Remove the old sink stopper. 2: Inserting a stainless steel rebound core. 3: Pop Up Sink Drain, serves as a tub/sink stopper. 4: picks up hair, jewelry, dirt... Quantity delivered: 2 pieces