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. Please contact us if you have any problems or suggestions visa Amazon,you will get reply in 24 hours.