This kitchen sink drain strainer measures 4.5"(11.5cm) wide. The middle opening measures 7cm wide and 1" deep. This kitchen sink drain strainer includes a small ring handle to easily lift up the filter when you want to clean and empty it. The kitchen sink drain strainer is stainless steel and is great to prevent and trap hair and other things from falling into the kitchen sink drain and clogging it. Water pass through but not the debris. Stop clogs now. These simple devices can save you hundreds of dollars in plumbing bills!