EXCELLENT MATERIAL: Our Made of stainless steel, the drain stopper of this drain is rust resistant and has a long service life. Thicker and heavier materials make this kitchen sink strainer stopper more robust. EASY TO INSTALL: Press the button to fill the sink, gently lift to drain water and collect residue. rubber gasket and ball bearing allow this sink strainer to be used as a drain plug; Simply push the strainer down to plug the hole. GOOD DESIGN: Each sink stopper has 20 holes, prevents food particles and other residue from falling out, making sinks more hygienic and less prone to blockages and clogging. RANGE OF USE: These two drain filters can be installed in old sinks, bathtubs, basins, and the smooth surface allows you to clean easily and conveniently. The stainless steel sink strainer is good for restaurants, caterers, food pantries, churches, cafeterias, and homes. SIZE: The outer diameter of the sink strainer is 80 mm/ 3.1 inch, suitable for sink diameter 79 - 80 mm. Specification: Material: Stainless Steel Diameter: 80mm