General dimensions: This sink is a universal stainless steel product with a spring core and can be used for different types of sink drainage. The sink strainer has an inner diameter of 33mm for 34-38mm drain holes. Easy to install: Easy to install with bare hands without tools. Just remove the old spring core and install a new one. Anyone can install the pop - up link because it is simple in structure. If you want to use a larger diameter, you can use the rubber ring we offer to increase the inner diameter of the sink cover. High quality material: the drain plug is mainly Made of high quality stainless steel and thickened copper, durable, rust and crack resistant. Due to its good resistance to rebound and rebound, the water moves quickly and closes quickly. Built-in strainer: The sink cover has an anti - blockage basket to collect hair and prevent pipeline blockage. Unlike push buttons, it can filter effectively. For bathtub, toilet, kitchen sink, etc. Dual Mode Switch: Pop-up design, this flow screen changes the uncomfortable drain mode. It is a 2-in-1 tub plug and filter. Just lightly press the top cover to switch the two modes, including water retention and drainage. Package containing: filter*1