PERFECT COMPATIBILITY: Our sink drains strainers can be used for 99% of sink drain holes. (Inner diameter 26mm-50mm (1.02inch-1.96inch)) Not matter basin, bathroom sink drains or shower bathtub drains, it can work with all. NOTE: Make sure your sink drain is straight through or greater than 1.67 inches height. UPGRADED DESIGN: The bathroom sink stopper is more convenient and useful than regular sink stopper. Upgraded pop-up sink drain plug has an anti-clogging basket inside that can prevent the sewer from stuck of hairs. In addition, it comes with anti-slip rubber mat and two size rubber rings to prevent water leakage. EASY TO INSTALL: You can easily install the pop-up sink stopper because of its simple structure, no tools are needed, just take out the old one and insert it to complete it. PREMIUM MATERIAL: The drain stopper is mainly made of quality zinc alloy materials, anti-rust, anti-cracking, integral molding. Good rebound strength, quickly seal and drain water with a single press. STURDY BASKET STOPPER: The rubber ring around our built-in basket keeps the stability, it will not tilt when you push the button. There is a large anti-slip pad under the bouncing core, which can match seamlessly with the sink drain hole under the action of water pressure. So you don't have to worry about sealing and drainage.