This hammered bathroom copper sink is a beautiful piece of art, the rim is flat (1 wide), allowing it to be under-mounted, the bowl is 15" diameter. From a copper sheet the wise artisan hands transform it into this unique piece. The bathroom copper sink you are looking at has a standard 1.5" diameter hole and it does not have a overflow system. The hammer footprint is very visible. The reddish/oxidized texture is characteristic of natural copper when it is cooled down from red-hot temperature using cold water, technique that the coppersmiths use.This copper sink was made from one sheet of copper, raised with the artist hammer, there are no one welded joints.Hammering the red-hot copper is an ancient technique the coppersmiths use, where no sophisticated tools are used, just the furnace to heat the copper and a hammer to give it the shape. We got this bathroom copper sink from the skilled coppersmiths from Santa Clara del Cobre, Mexico. The finish is in a natural-looking copper color. Suitable for your bathroom, it will add a unique home accent making it a very special point of attraction in your bathroom. The copper sheet is 16 gauge (0.05" thickness)."