Universal Size: This sink is a universal stainless steel product with pure copper spring core, can be used for different types of basin drains, The inner diameter of the sink strainer is 33.5mm. Suitable for the holes drainage with an internal diameter of 34 to 40 mm. Integrated Strainer: Unlike a regular button drain valve, this drain plug has an anti-clog strainer inside that neatly collects hair and prevents the drain from clogging. pop up sink stopper ideal to protect jewellery, rings, dirt and other objects. 3 Seconds Quick Installation: Tool-free installation and removal can be done in 3 seconds. You just need to remove the original drain plug by hand, insert our sink plug and press the spring-loaded switch to easily complete sealing and filtering. Excellent Material: The drain plug is mainly made of high quality stainless steel and brass. It is anti-rust and anti-crack and is formed in one body. Good rebound and rebound resistance, tightness and rapid drainage can be achieved with just one click. Pop-up Drain Valve: The drain plug has a two-in-one pop-up design. Simply press the top cover to switch between the two modes of water storage and drainage, which can also effectively prevent odors.Two black silicone seals can maintain stability to improve leak resistance.