General description This pop-up sink drain is designed for sinks without an overflow feature. It features a standard installation dimension of ¼ inch, making it compatible with all commercial sinks lacking an overflow. The anti-overflow design helps prevent unpleasant sewer odors, enhancing the comfort and aesthetics of your bathroom. Technical specifications Material: All copper Finish: Polished chrome Installation dimension: ¼ inch Installation Fits all common sinks with a standard ¼ inch installation dimension Includes all necessary gaskets and accessories for installation Easy to install following the provided instructions Usage Push-type rebound switch for easy operation: press to close and lock, press again to open and drain Top cap can be unscrewed by turning counterclockwise for easy removal