This bathroom sink drain with overflow is designed for sinks with overflow holes.pop up drain stopper for bathroom sink is crafted from premium metal ensuring exceptional durability.Anyone can install a pop up drain due to its simple construction, no tools required, the thickened and extended nut allow it to be mounted by bare hand. Features: The anti-clogging drain filter efficiently traps debris from clogging drain pipes. Spring loaded push button does not require a lift rod. Simply push the drain cap down to close and seal, push it again to open and drain water. You can turn the upper cap counter-clockwise to unscrew and remove. Silicone Washer is better sealing and more durable. Dimensions: OverallHeight :8" Overflow: Yes Pop-up Drain: Yes. Material: Metal