80mm Sink Mouth: The outer diameter of the sink stopper is 80mm. It is suitable for sinks with diameters between 79 mm and 81 mm. Suitable for most overflow basins or eccentric basins with closing plugs. NOTE: Please carefully check the size/diameter of your sink drain pipe before purchasing. Quality and Practical: Our kitchen drain plug is made of high-quality 304 stainless steel, copper and rubber with high-quality electroplating technology, which is rust-proof, corrosion-resistant, thickened and durable. Package contains 2 pieces. Rinse filter and 2 pieces. The drain catcher is practical and allows you to use it in the bathroom. Upgraded 20 holes: Unlike other 18-hole sieve plugs, our sieve plugs are equipped with 20 small holes. So it drains water quickly while capturing fine waste. Dual Function: The stainless steel strainer plug doubles as a rinse plug and filter: press down on the strainer to seal the hole and lift slightly to drain water and capture any residue. This is an ideal choice for your family. Versatility: These drain strainers fit old sinks, basins, bathtubs and traditional drain fittings.