1. Easy Installation: The plastic sink overflow ring cover is easy and convenient to install into the overflow hole. It is simple to use and no tools are required. The sink overflow ring simply inserts into the hole and locks. 2. Wide Application: Our sink drain plugs are suitable for many types of sinks on the market, including those in kitchens, bathrooms, and wash basins. They are suitable for use in homes, hotels, shopping malls, schools, factories, and more. 3. Material: The sink overflow ring is made of plastic. It is coated with a layer, which has good adhesion to the color, ensuring a glossy surface. It is durable and will not scratch the basin. 4. Detailed Size Information: Please measure the diameter of the overflow hole before ordering. The suitable outer diameter is about 30 mm/1.18 inches, and the height of the holder is about 12 mm/0.47 inches. It fits many sinks. The package includes 4 overflow covers for one sink, and the quantity can meet daily needs.