Fine filter holes: This drain plug is an anti-clogging filter in the lnner, the filter is more dense and effective against blockage, that the drain does not clog. So no objects such as rings, jewellery, dirt, etc. does not penetrate in the evacuation. Two seals: Optimized and improved drain plug, increased on 2 seals, it is suitable for drain holes with inner diameter 34-40mm, to avoid common problems such as inconsistent size and insufficient adaptations. Suitable for 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 the drain parts, just remove the original copper core, insert our drain plug, gently shake the drain screw to fit in the evacuation hole, to press on the switch to close the tank and the flow of water. Cleaning and odor removal: With the removable basket design, take out the plug and take out the basket, you can easily remove foreign objects - It can also prevent the drain channels from draining and avoid the smells specials. Washbasin with rebound system Suitable for an internal 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 drainage hole of 34 mm to 40 mm. Please measure the diameter of the drain hole before purchase, so as not to waste time. Contents: 2 washbasins with seal from 34 to 36. 2 seal rings from 37 to 40 mm. Push-in type 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: collects hair, jewelry, dirt, etc.