Compatibility: This bullet style pop up drain converter is suitable for almost all American bathroom sinks. Its bullet core means it will easily fit into any drain sized 1.1"-1.5". Standard sized American drains are typically between 1.25" and 1.4". Our three silicone rings ensures a proper fit with all kinds of drain holes. Other similar products are too large for American sinks. Easy Installation: just take out the old one and simple fit the popup drain with the O-ring, and place into the drain hole. No need for a plumber or any tools. Note: Please measure yours before purchasing. Anti-clogging design: Unlike ordinary button drain plugs, Upgraded pop-up sink drain plug has an anti-clogging basket inside that collects hair and other similar materials from entering your plumbing and damaging your system. Prevents the drain from clogging and your ring will never enter the sewer again.Easy removal when harmful materials enter the stopper, simply pull the drain out and remove harmful particulates from the strainers. Easy of Use: The sink drain plug has a beautiful bullet core thrust shape. Good rebound strength, drainage is fast and smooth. Structured with a thickened silicone rings gasket, prevent the odor from sewer,so you can enjoy the fresh air at home. Premium and durabe material: Our bathroom sink stopper is made of anti-cracking thickened quality stainless steel and brass material, with durability, strong structure, it can be used for a long time without cracking and water leakage.