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 80 mm/ 3.15 inch, suitable for sink diameter 79 - 82 mm, rubber seal diameter is 55 mm/ 2.17 inch, please check the dimensions before purchasing.Cleanliness: The sink basket is made up of 18 small holes to effectively filter food residue by preventing your siphon from being clogged and thus retaining bad odors while allowing water to drain optimally.Easy to Use: Rubber seal and ball bearing allow this sink strainer to be used as a drain plug; Simply push the strainer down to plug the hole.Multi Purpose: The kitchen sink stopper is corrosion resistant, high temperature and rust proof for daily utility use whether you are professional (restaurant , caterer, cafeteria, etc...) or individual. You can use the universal sink strainer for your kitchen sink/bathroom sink/basins/bathtub.