OPENING AND CLOSING WITH VALVE: This sink plug features a quick-opening design that combines a sink plug and a sink strainer. Simply press the top cover gently to allow the sink to switch between water storage and drainage modes. With the silicone sealing ring, it is not easy to leak when storing water. The evenly distributed drainage holes allow water to flow quickly and smoothly when draining the sink. EASY TO USE: With an inner diameter of 30mm and a height of 80mm, this drain plug fits most drain holes with a diameter of 33 to 40mm. Easy to install without tools, just insert the strainer into the drain hole to fix it. The strainer detaches by gently twisting to unlock the strainer's latch, allowing you to remove it for cleaning effortlessly. PREMIUM MATERIAL: This sink strainer is made of high-quality stainless steel and thick copper to ensure its strength and durability. With the brass inner core and thickened spring, it is more flexible to press, not easy to break, and not prone to rot. MULTIPLE SITUATIONS: The pop-up sink plug combines the functions of drainage and water retention with an easy-to-clean removable strainer, ideal for floor drains, bathroom sinks, and drains, making it an ideal accessory for any bathroom or kitchen. We recommend measuring the size of the drain hole before purchasing for better use.