1. Pop-up drain filter design improves upon traditional drainage methods such as basic plug with chain. You can switch between the two modes, plug (water storage) and filter (water drainage), just by lightly pressing the top cover. 2. Built-in strainer: Unlike regular push button drains, this drain stopper includes a clogging-prevention basket strainer that collects hair and helps prevent drain blockages. It helps keep jewelry, rings, dirt, and other items from entering the drain pipe. 3. Waterproof: It features a thickened, barbed silicone gasket with oxidation resistance. No glue is required. 4. Sturdy sink stopper: It has an integrated seamless design. The rubber ring around the built-in basket ensures stability and prevents tilting when pressing the button. You don't have to worry about sealing or drainage performance. 5. Durable material: The pop-up sink drain is made of thickened stainless steel, offering durability, smooth touch, rust resistance, corrosion resistance, and colorfastness. 6. Easy to install: Anyone can install this pop-up drain filter due to its simple structure and tool-free installation. Simply remove the old sink drain stopper and insert the new core. Features: Material: Copper Color: Grey, silver, rose red Size: As shown in the picture (1 inch = 25.4mm or 1mm = 0.0393 inch) Includes: 1 x Basin Pop-up Drain Filter Notice: 1. Please allow 2-3% error due to manual measurement. 2. Colors may appear slightly different due to monitor display variations.