About this item High-quality materials: The product is corrosion-resistant, does not rust easily, and is durable. Surface polishing: The surface of the sink drain with overflow hole is polished and galvanized, making the product's surface smooth, delicate, and rust-resistant. Spring-loaded design: The product springs when pressed down during use, which is convenient for water storage and drainage. Easy installation: The standardized installation dimension of 1 1/4 \" ensures that the push-open drain valve fits all standard sinks and washbasins with overflow holes. It can be installed in just a few steps without tools. Wide application: This sink drain with overflow hole is suitable for use in families and various bathrooms and toilets such as restaurants, bars, and hotels. It can be harmoniously combined with all sinks, washbasins, and countertops with overflow holes. Discover more product details by clicking the link above.