Perfect compatibility: Our bathroom sink filter is suitable for 99% American standard sink drainage. Recommended for 1.06 "- 1.65" diameter drain holes. Please be sure to measure the size of the sink drain hole before purchasing. Innovative two in one design: This is an innovative design of sink plug or filter. Different from the ordinary drain plug, the new bathroom sink drain plug has water sealing and anti blocking functions. Save money: easy to install, no expensive plumber costs, no troublesome cleaning tools. Just remove the old O-ring and insert the new bathroom sink drain plug into the drain hole, and you can use it easily. Replacement of the bathroom sink plug: If you are facing an annoying drainage blockage problem, or just need to replace the old broken sink plug with a new one. Fortunately, our newly designed two in one bathroom sink plug can easily save water from the sink and prevent clogging. High quality materials: the bouncing cap and hair basket are made of high quality metal, the core is made of high quality brass, and the surface is plated with electroplating coating. With 3 silicone sealing rings for different sizes of drain holes. It is rust proof and durable.