Sink drain without overflow; Easy to install, with a standard installation dimension of 1 ¼ inches, this sink drain fits all standard sinks. The sink can be removed by hand in seconds, unscrewed, cleaned, screwed and done Brass construction which is then chrome-plated, anti-erosion, anti-abrasion Sink ring sealing: very high density and continuous Attention: The sink hole must be regularly round, the edge must be smooth and flat. If the hole is crooked and icy, it will leak after you install this drain.