[Design] The water tank filter umbrella adopts an inner and outer double-layer design, which is highly corrosion-resistant, easy to clean, not easy to fall off, and waterproof. HIGH QUALITYThe sink strainer is made of stainless steel and PVC. No rust. Corrosion resistance. Easy to clean. Easy InstallationNo need to stick raw material tapes, gaskets, and turn screws on the top and bottom of the sink. Application: The drain strainer is ideal for sinks with sizes from 110mm to 114mm. What is the recommended sink diameter? 83-90 mm Please note the diameter of the sink filter plug and its rubber ring. Wide range of usesThe sink drain assembly contains a strainer and a plug that can collect food debris, act as a filter to avoid clogging pipes, and act as a plug to keep water in the kitchen basket.