This kitchen copper sink has two standard 3.75 diameter holes, one per bowl and both bowls are the same size. The bowls are 15" long by 14" and 18" by 14" in their shortest and longest widths respectively. The inside depth in the bowl is 10". The front and back borders are 2" wide; the left and right rims are 2" wide and the center one is 1".The copper sheet is 16 gauge (0.05" thickness). The border is flat, which means, the sink can be either under or over mounted.From a copper sheet the wise artisan hands transform it into this unique piece. The hammer footprint is very visible, giving it its own character. The reddish/oxidated texture is characteristic of natural copper when it is cooled down from red-hot temperature using cold water, that specific characteristic is what makes it so beautiful. The finish is in a dark brownish color. Along your home decoration, this piece will add a unique touch to your kitchen making it a very special point of attraction. The patina can be damaged if any abrasive substances stay for long periods of time on the sink surface, because of this, washing it after usage is recommended; besides that, no more maintenance is required."Hand-hammered and mold-cut to perfectionHandcrafted by Mexico''s Finest ArtisansWe include 1" long brown screws in all of our hammered copper switch plates