[Built-in Strainer] The sink plug features an anti-blocking basket strainer inside that collects hair and prevents the drain from clogging, providing effective filtering unlike a regular push-button drain. Suitable for bathtub, bathroom, and kitchen sink. [Easy to Install] No tools are required. It can be easily installed with bare hands. Simply remove the old bounce core and install a new one. Anyone can install the pop-up drain because of its simple structure. If you want to use it for a larger sink hole diameter, you can use the rubber ring we included to increase the inner diameter of the sink plug. [Two-Mode Switch] The pop-up design of this drain strainer overturns the inconvenient way of drainage. It is a 2-in-1 bathtub plug and filter. Simply gently push down the top cap. to switch between 2 modes, including holding water and draining water.