【Suitable for 1.1~1.4'' Drain Hole】 This sink stopper is only suitable for drain holes with an inner diameter of 1.1~ 1.4 inch (28 mm-36 mm)and fit 1.25 inch Standard drains.NOTE: it’s not fit all sizes of drain types. Please make sure to measure your sink's drain hole size before purchasing. 【Upgraded Sink Stopper】This Sink Stopper adopt bullet core shape design,built-in spring,Good bounce and rebound strength of the sink drain stopper,it can quickly seal and drain water just with a single press,more convenient and useful than traditional sink stopper. 【Build-In Strainer,Effective Anti-blocking】This sink drain stopper has a build-in strainer anti-clogging basket inside that prevent the drain from clogging up with hairs,rings,jewelry,dirt.The rubber ring around built-in basket keeps the stability.It can works for basin sink drains or shower bathtub drains.Only suitable for 1.1~ 1.4'' diameter drains. 【High Quality Material】The pop-up drain stopper is mainly made of superior quality stainless steel and brass materials,it's seamless and durable,explosion-proof,crack-proof,anti-rust; Come with the high-quality silicone ring,premium air-tightness can effectively prevent water leakage. 【Easy to Install & Operate】 Simple structure,no need tools,just take out the old one and insert the stopper core to complete Install. And 2 modes easy switch,just to pressing the top cap down- stopper (keep the water) and strainer (drain off the water).