Universal sizeThis sink drain is suitable for different types of pop-up filter basket drains. Suitable for drain holes with an inner diameter of 33mm to 40mm. Stainless steel materialThe basin plug is mainly made of high quality 304 stainless steel and material made of thick copper, which is strong, rust-proof, tear-resistant, molded in one piece, quick-draining and leak-proof. Built-in filterThis sink drain has a non-clogging filter that collects easily removes hair accessories, rings, dirt and more. Effectively prevent drain 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 stopper is made of solid brass rebound core, which has good anti-kickback and rebound capacity. The flush cap can be closed and opened in a second! No more clogging and leaking! EASY TO CLEAN AND INSTALLThe sink drain plug can quickly and easily remove the old bouncing core and install the new one without tools, the drain plug the all-metal sink (the knob parts are plastic) can be completely disassembled for cleaning!