Unique Design: The sink strainer is double layer inside and outside, excellent corrosion resistance and easy to clean, not easy to fall off and waterproof. Wide Application: This sink drain set includes a strainer and a plug, which can act as a strainer to catch food residue to prevent your pipes from clogging and keep the water in the kitchen basket as a stopper. Universal Fit: The sink collection is perfect for the sink size of φ114mm, we recommend sink connection diameter of φ83 - 90mm, please make sure the diameter of this sink filter plug and its rubber ring is the same as before. Easy Installation: There is a soft washer on the top and bottom of the sink, you just need to turn the screw to complete the installation. It is also OK to turn the screw with a coin. High quality. This kitchen sink strainer is made of stainless steel and PVC and will not rust. Corrosion resistance.