1.Universal Size: The drain plug can be used in the bathroom for sinks and bathtubs, and universal bathtub stopper also for the kitchen. It is suitable for drain holes with an inner diameter of 34mm-40mm (1.33in-1.57in).Please pay attention to the installation size of your sinks before purchasing. 2.Built-in Filter: Sink drain valve There is a valve at the bottom that can close automatically against insects and odors. This bathtub stopper is equipped with an anti-clogging basket filter, which is suitable for cleaning dirt and can prevent jewelry, rings, dirt and other objects from entering the drain pipe, to avoid clogging the drain pipe. 3.Two-Mode Switch: The pop-up design of this drain filter sink plug reverses the inconvenient drainage mode. 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, it comes with non-slip rubber pads and two large and small rubber rings to prevent water leakage. 4.Premium Material: Sink stopper made of high quality solid brass and PC material. The surface is coated with multiple layers of chrome plating, which can effectively prevent scratches, corrosion and rust, good rebound and rebound resistance, quick sealing and draining can be achieved with one click. 5.Easy to install: No tools required, easy to install with bare hands. You just need to remove the old rebound core and insert our push type rebound core. Our included silicone non-slip pads fit snugly over your sink's drain holes to help store water and prevent leaks.