Standard 44mm drain: Suitable for sink holes with a diameter of 41mm to 50mm. Max. Thickness of the washbasin: 50 mm, min.: 20 mm. Suitable for any drain without an overflow. Solid Metal Construction: The drain plug is made of brass and high quality 304 stainless steel, protecting against corrosion and rust in humid environment. Dimension: Total length: 215 mm , diameter of the pop-up lid: 66 mm, diameter of the tailpipe: 32 mm. Easy to use: spring-loaded push button. Simply push down on the drain cap to close and lock. Press again to open and drain water. You can twist the top cap counter-clockwise to unscrew and remove. Won't Leak: Package includes all required washers, gaskets and brass mounting nuts. To avoid leakage, please make sure the gasket is installed in the correct position.