BUILTIN FILTER sink drain valve, there is a valve at the bottom that can be automatically closed against insects and odors. The sink stopper has an internal basket strainer that can collect hair and prevent the drain from clogging, objects cannot enter the drain, such as jewelry, rings, dirt, etc.UNIVERSAL SIZE Bathroom Drain Plug It is suitable for drain holes with an inner diameter of 34mm to 40mm. Please pay attention to the installation size of your sinks before purchasing, to prevent the product from entering the drain hole.PREMIUM MATERIAL High quality solid brass drain plug and PC material. The chrome surface effectively protects against corrosion and rust, good recovery and rebound resistance, quick sealing and drainage can be achieved with just one click.IN USE The drain plug can be used in the bathroom for sinks and bathtubs, as well as for the kitchen.EASY INSTALLATIONNo tools required, can be easily installed with bare hands. All components can be easily removed. Thanks to the simple and convenient structure, even women can install the drain in a few steps without using the commercial sink instructions.