1.2in1 function: the popup sink strainer is equipped with a clogproof basket on the inside that combines plugs and filters in one. The removable expansion basket provides additional space to catch sediment. This design can be used for hair, dirt and valuables (e.g. jewellery rings) before they flow into the drain to prevent clogging. 2.Highquality materials: the sink plug is made of thickened premium stainless steel sus304 and brass, is solid and designed for a long life with flat and pleasant to the touch surface, no water leakage for a longer operating time. The sink plug has a thickened, graduated silicone seal structure to prevent this, eliminate channel odours and ensure that you can enjoy fresh air at home. 3.Perfect compatibility: the sink drain plug is suitable for most sink drain holes with an inner diameter of 3440 mm (1.331.57 inches) and is often used in bathrooms, kitchens and bathtubs. Please measure the drain hole of your sink before purchasing, adjust your needs. There are two antileak seals, please replace them according to the actual situation. 4.Press design: the press design combines two modes of drainage and water storage by pressing the bouncing core to achieve a mode switching, precision materials, seals no leakage when storing water and at the same time can effectively isolate the smell of the sewage channel; when emptying, a high flow and fast drainage is achieved, making the drainage problem easy.