Sink strainer is compatible for most standard kitchen sinks as well as bathroom and utility sinks, it is made of stainless steel durable construction which is built to last. High density mesh traps food scraps efficiently without stopping the flow of water, keeping your drain from creating blockage. The outside rim provides the drain strainer a secure sitting over the drain. Smooth edge will not scratch your hands or damage your sinks. A perfect tool to keep hair, residues, debris from clogging your sink drains. Outer Diameter 4.5 inch/11.5cm, Inner Diameter 3 inch/7.6cm. Our mission: Make your housework easier, and make the world cleaner. Should you have any questions about the product or after-sale service, please do not hesitate to contact us, we are here for support and advice