Premium pop-up drain assembly features a reinforced design with all-metal construction for maximum durability and long-lasting use. Fits standard 1 3/4-inch drain openings, and is designed for use with all lavatory sinks with built-in overflow, including basin and under-mount sinks. Installation is easy with all required rubber gaskets included for lasting leak-free use. This bathroom sink drain assembly features a spring-loaded pop-up stopper for easy operation: Press down to seal off the drain opening, and press it again to open and allow water to flow freely. Available in a range of corrosion-resistant finishes, including Spot Free Stainless Steel that helps prevent water spots and fingerprints, and is easy to keep clean without the use of abrasive chemicals.