【Universal Size】This sink drain is suitable for different types of pop-up strainer basket drains. Suitable for drain holes with an inner diameter of 32mm to 42mm (1.26-1.65inch). Note: Please measure the size of the drain hole before purchasing to avoid the product not fitting into the drain hole. 【Stainless Steel Material】The sink stopper is mainly made of high-quality 304 stainless steel and thick copper material, which is strong, rust-proof, tear-resistant, one-piece molding, quick-draining and leak-proof. 【Built-in Filter】This sink drain has a non-clogging filter that easily collects hair accessories, rings, dirt and more. Effectively prevent the drain from clogging, this is a removable and washable sink stopper, just clean the dirt stuck in the filter and avoid asking a plumber for help. 【POP-UP FUNCTION】 Our bathroom sink stoppers are made of a solid brass bounce core, which has good anti-bounce and bounce ability. The flush stopper can be closed and opened in one second! No