The T&S Brass B-3960 waste drain lever is a mechanical operating component designed for compatible commercial sink drain assemblies with a 3-inch sink opening. It connects to the drain mechanism and allows users to operate the waste outlet without directly handling the drain stopper. Moving the lever actuates the connected linkage to control the drain opening and closing position. Its... https://partsfe.com/waste-drain-3-sink-opening-lever-b-3960/1-B-3960.html