Washbasin drain for basin without overflow; Easy to install", this sink plug is suitable for all commercial sinksAutomatic plug-in and operated with the touch of a finger, the sink plug cover comes off by hand in just seconds unscrew, clean, screw and doneBrass construction which is then chrome plated, anti-erosion, anti-abrasionSealing ring: very high density and continuousAttention: the sink hole should be regular round, the edge should be smooth and flat. If the sink hole is crooked and frosted, it will leak after you install this sink drainNote: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.