Siphon and drain all made of brass, durable material, resistance to corrosion and rust, therefore long life.Drainage system included overflow drain and siphon, Siphon with anti-blocking and anti-odor effect, useful for a bathroom sink.Wide usage drainage system includes siphon and basin drain, threaded joint size is standard G1-1/4, suitable for most basins, basins or sinks.Siphon and sink drain with overflow, to prevent water from overflowing outside.Simply squeeze the large round lid to store water, squeeze again to open and let the water flow out. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.