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