Built-in strainer: The sink plug features an internal, anti-clog strainer that catches hair and prevents drain clogging. Unlike a regular push-button drain, it offers more effective filtration. Suitable for bathtubs, bathroom sinks, kitchen sinks, and more. Easy installation: No tools are required; installation can be easily done with bare hands. Simply remove the old rebound core and insert a new one. Due to its simple structure, anyone can install the pop-up drain. If you want to use it for a larger diameter sink hole, you can enlarge the inner diameter of the sink plug with the included rubber ring. Two-mode switch: The pop-up design of this sink strainer reverses the inconvenient drain type. This is a 2-in-1 bathtub plug and strainer. Simply press the top cap down slightly to switch between 2 modes, retaining water and draining. Double Seal: The sink drain fitting with hair filter is made of chrome-plated brass, rust-proof, sturdy, and durable. Universal: The sink plug with spring