MaterialThe sink overflow ring is made of high quality ABS plastic, with good toughness, strong and durable. Compared with metal overflow stopper, our sink stopper will not scratch your sink. What You Will Get 5 double layer overflow covers. The outer diameter is 33mm, is designed to fit standard overflow holes from 22mm to 24mm (7/8"). Design The surface of the round lid is chrome plated, and the color is uniform, ensuring the gloss and brightness of the surface, and has excellent corrosion resistance, to provide you with a long service life. Easy to installOur sink overflow rings are easy and convenient to match with faucets, you just need to push and click to place them, put some soap on them can help slide easily without breaking the cap cover feet, easy for you to install. Multiple ApplicationsOur sink cover can be matched with most types of sinks, which is very suitable for schools, homes, hotels, shopping malls, factories and other places.