This 3-in-1 kitchen sink drain strainer and stopper fits standard sinks with drain openings of 2.9–3.5 inches in diameter and depth over 1.5 inches. Tool-free installation: simply insert into your drain for instant use. Crafted from premium 304 stainless steel with a smooth copper pop-up mechanism, it resists corrosion, rust, and daily wear. The one-touch press design allows seamless water storage and drainage, preventing clogs and odors while enhancing kitchen hygiene and user experience.