Premium Material: Made of good quality stainless steel with rubber gasket, thick, strong and durable, not easily deformed, providing long service life. Size: the outer diameter of the sink strainer is 78mm, suitable for sink diameter 79 - 80mm, the diameter of the rubber seal is 54mm, please check the dimensions before purchasing. Cleanliness: The sink basket is made up of 18 small holes to effectively filter food residue, preventing your siphon from being clogged and thus retaining bad odors while allowing the water to flow optimally. Easy to Use: Rubber gasket and ball bearing allow this sink strainer to be used as a drain stopper; Simply push the strainer down to plug the hole. Multi-use: The kitchen sink stopper is resistant to corrosion, high temperature and anti-rust for daily utility use whether you are a professional (restaurant, caterer, cafeteria, etc.) or an individual. You can use the universal sink drain for your kitchen sink/bathroom sink/basins/bathtub.