Material: The strainer basket is made of high-quality 304 stainless steel and PVC. Easy installation: There is a soft gasket on the top and bottom of the sink; simply turn the screws with a coin. Widely used: The 114 mm drain plug for the catch basin strainer is suitable for sinks with a hole size of φ83-90 mm. Please check the hole size of your sink before placing an order. Package includes: 1 x basket strainer, 1 x overflow. NOTE: This basket strainer is suitable for stainless steel sinks. For granite, marble, plastic, and ceramic sinks, please check whether the strainer plug screw length of 45 mm fits the sink before purchasing. If the screws are too short, you will need to purchase longer screws, which are not included. However, you can search for long screws in our shop.