High Quality and Durable Material: The bathroom sink drain filter is made of brass and zinc alloy. High-quality machining ensures the tub stopper is resistant to scratches, corrosion and discoloration, and is rust-proof and durable. High quality silicone ring seals securely. Sink filter stopper is designed for long term use. 2-in-1 Function: The pop-up bathroom sink stopper is designed with a pop-up mechanism to easily open and close the drain. Brass core construction ensures durability and longevity, making it a reliable choice for bathroom sinks. Anti-clogging design: The pop-up bathroom sink drain filter has an anti-clogging basket inside that combines the stopper and filter to store water and prevent clogging by preventing valuables like hair debris and jewelry rings from flowing in. . Removable expansion basket provides extra space to collect debris and makes cleaning easier. Easy to Use: Installing the universal bathroom sink strainer stopper is a breeze. Just remove the old bathroom sink plug, insert the new drain plug and it's ready to go. To clean, simply remove and rinse under running water, then use a soft brush or soft cloth to remove stubborn debris.