Material: Strainer basket is made of 304 stainless steel and high quality PVC. Easy to install: There is a soft washer on the top and bottom of the sink, just use a coin to turn the screw. Widely used: 114mm sink strainer waste plug suitable for sink hole size: 83-90mm, please check your sink hole size before place order. Please note: This sink strainer is suitable for stainless steel sinks. For granite sinks, marble, plastic and ceramic sinks, you must check whether the strainer plug screw length 45 mm fits the sink before buying. If the screw is too short, you need to buy a long screw, which is not included. Note: The data are all measured manually. Please allow an error of 1-3cm. Due to the difference between light and display, there is a certain color difference, which depends on the actual object received