[Only for drain pipes with a diameter of 1.1"-1.2" (approximately 2.9-3.2 cm)] The bathroom sink stoppers fit holes with a diameter of 1 1/8 ~ 1 1/4" (approximately 3.2-32 mm). We provide extra rubber rings. If it doesn't work after installation, try another ring. Please confirm your sink drain hole before purchasing.[Anti-clogging Design] This pop-up sink drain strainer has an anti-clogging basket filter inside to prevent the drain from sticking to hair, rings, jewelry, dirt. If you want to clean the sink stopper, just pull it up and you can do it easily.[Upgraded Pop-Up Drain Stopper] The drain strainer stoppers are made of high-quality stainless steel and brass. quality. Quickly seals and drains with just one push. No need to worry about rust, cracks, corrosion, or leaks. Perfectly matched to your sink. [Easy to install] Simply remove the old plug, then confirm the correct size and insert the plug and you're done [Easy to use] Pop-up bathroom sink stopper with good rebound force, you just need to easily press the sink stopper cover to switch between sealing and draining status.