【Premium Materials】The sink cap is made of fine copper and 304 stainless steel with a multi-layer chrome-plated surface, which is rust-proof and durable. The silicone rubber ring is waterproof and reliable. 【Highly Effective Filtration】The built-in anti-clog sink cap effectively catches hair and dirt and allows it to drain away quickly to solve clogging problems. 【Easy to Use】Thanks to the pop-up design of the toilet cap, you can switch between water retention and drain mode by lightly pressing the top cover. Installation is simple; just insert it into the drain hole. 【2-in-1 Function】This is both a sink plug and a sink filter that effectively catches hair, prevents blockages, and ensures smoother flow. 【Universal Fit】The sink filter fits sinks with an inner diameter of 1.02 to 1.2 inches and comes with two types of rubber rings (34 mm and 40 mm) to ensure a secure fit. Suitable for plumbing in the kitchen, bathroom, and bathtub. Measure the size of the drain hole before purchasing.