1.Versatile Compatibility: This bathroom sink drain stopper is designed to fit 99% of standard US sink drains, including bathroom sinks and washbasins with drain holes ranging from 1' to 2.3'. Please measure your sink drain hole opening before purchasing to ensure a proper fit. The package includes four O-rings. Note: This stopper is not suitable for bathtub drains 2.Innovative Anti-Clogging Feature and Big Cap Design: The upgraded pop-up bathroom sink drainer has enhanced sealing and anti-clogging capabilities. Its integrated basket effectively traps small items like hair, jewellery, and other debris, preventing them from falling down the drain and causing blockages. The brushed nickel-coated large cap provides an extended pressing area for easy operation and complements your bathroom decor nicely 3.Upgraded 2-in-1 Design: The sink stopper is designed for stability, with rubber rings around the hair-catching basket. Its flexible elastic mechanism has good rebound strength, allowing for effortless switching between water storage and drainage with a simple press 4.Long-lasting All Metal Construction: Our pop-up sink drain strainer is made from high-quality stainless steel, ensuring corrosion resistance and long-lasting durability. The bounce cap and hair-catching basket are crafted from premium brass with a brushed nickel finish, ing good rebound strength