Material - Made of high quality ABS plastic, better grip than metal, won't scratch your basin; good adhesion of plating, uniform color and corrosion resistance; resistant, ensure the surface gloss and shine.<br> Size - Overflow drain cover size: 1.29 inch diameter. Suitable for 0.87inch-0.94inch/22mm-24mm hole, almost fit for all types of ceramic sinks on the market.<br> Easy Install, No Tools Required - Put a little soap on top of them when installing so they slide in easily and don't break. Just push in and click into place, please don't be afraid to push it.<br> Widely Application - Widely used in homes, shopping malls, hotels, factories, schools, including kitchens and Bathrooms.<br> Package Include: 4overflow cover. Provides a decorative solution to cover the overflow opening, enhancing the overall design of the bathroom and complementing the void.