Good Sealing:sink drain stopper with white leak-proof silicone ring, with good sealing to prevent food residue from causing pipe blockage.Note:it fits a 35mm sink hole,please make measurements before buying. Unique Pop-up Design: Bathroom pop up sink plug has a built-in spring, press the pop-up cover to close or open easily, when closed the sink can be filled with water, press the lid again to drain quickly. Premium Selected Materials: Pop up push button drain stopper made of stainless steel and brass, with a smooth surface, strong and corrosion resistant, not easy to hurt, silver appearance can better match with the sink. Easy Installation: Bathroom sink stopper is easy to install, just take out the old sink stopper and insert new stopper button into sink hole, it can be easy to connect and use. Applications Pop-up sink plugs are suitable for for kitchen sinks, bathroom basins, household laundry pools, bathtubs, mop pools, swimming pools, it can easily keep water in the sink.