Unique Design: The sink strainer is designed to be double-layered inside and outside, has super corrosion resistance, easy to clean. It is not easy to fall off and waterproof. Widely Application: This sink drain set includes strainer and stopper, which can catch food debris avoiding clogging of your plumbing as a strainer and keeping the water in the kitchen basket as a stopper. Universal Fit: The sink collection is perfect for the sink size of 110mm-114mm. We will recommend the sink socket diameter of 83 - 90 mm. Please make sure the diameter of this sink strainer plug and its rubber ring are the same as before. Easy to install: There is a soft washer at the top and bottom of the sink, you only need to turn the screw to complete the installation. Using a coin to turn the screw is also ok. High Quality This kitchen sink strainer is made of stainless steel and PVC, never rust. Corrosion resistance.