【Easy Installation】 Pop-up sink drain stopper with simple construction for easy installation, no tools required. You can do it by yourself. 【Quick Drainage】 Big push button design makes water flow down quickly during washing. Multi-layer polished chrome surface treatment can resist daily scratches, corrosion and discoloration. 【Easy Operation 】 Just push the drain cover down to close and seal it, then push it again to open and drain. You can turn the upper cover counterclockwise to unscrew and remove. 【Available Sise】 With Overflow, suitable for sink hole diameter: 40mm-50mm(1.6″-1.9″) with maximum sink thickness of 1.97 inches. Please check the size of the sink hole before purchasing. 【Built-in Filter】anti-clogging basket filter inside the drain which can prevent the drain pipe from clogging.