The Push to Seal Dome Drain allows for complete closure and opening of the drain, as needed. Push down to seal the drain; push again to open. The Push to Seal Dome Drain has maximum threading to snuggly fit our copper bathroom sinks. High-quality plating and thicker gauge metal make all Native Trails drains the best of class. The 1.5" Push to Seal Dome Drain is available in finishes that perfectly coordinate with Native Trails' hand hammered copper sinks and NativeStone sinks.