①. Easy Installation: Plastic Sink Overflow Ring Cover, easy and convenient to install into the overflow hole, simple to use, no tools required. The Sink Overflow Ring simply inserts into the hole and locks. ②. Wide Application: Our Sink Drain Plugs are suitable for most types of sinks on the market, suitable for kitchen, bathroom, wash basin. Ideal for use in home, hotel, shopping mall, school, factory and more. ③. Material: Sink Overflow Ring is made of plastic, coated with a layer, with good adhesion to the color, ensuring a glossy surface, strong and 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 inch, and the height of the holder is about 12 mm/0.47 inch, which fits most sinks. The package includes 4 overflow covers for one sink, and the quantity can meet daily needs.