Suitable for all types of ceramic pots on the market, suitable for 0.8 inch-0.91 inch sink hole. Made from high quality plastic that grips better than metal and won't scratch your basin. Widely used in homes, shopping malls, hotels, factories, including the kitchen. Decorates the overflow hole but does not block it, easy install no tools are required. Simply pushes in and clicks in to place, please don't afraid to push it. Oil Rubbed Bronze Sink Basin Trim Overflow Cover for Kitchen and Bathroom Vanity Sink Solid Brass Vessel Insert in Hole Round Caps Pack of 2