Hibbent 2 Pack Push And Seal Pop Up Drain Stopper With Overflow For, Matte Black Pop-up Drain Stopper with Overflow: It fits sink drain diameter of 1-5/8? to 1-3/4?. It does NOT fit for 1 - 1/2" sink hole, please check the size of the sink hole before purchasing. Easy to Use: Spring loaded push button does not require a lift rod. Press to seal and press again to open. Sink Drain with Overflow: If your wash basin with overflow hole, then you choose drainer with overflow hole. Easy to Install: The pop-up drain stopper comes with all parts for easy assembly, gaskets supplied for a tight seal, round cap creates a seamless look in your sink. No Leak Design: The Hibbent pop up drain stopper has a good sealing. Pop-up drain stopper seals the drain completely making your sink stays filled.