The rim on this hammered bar copper sink is flat (1.5 wide), allowing it to be under-mounted, the bowl is 16" x 16" and is rounded in the corners. The bar copper sink you are looking at has a standard 3.75" diameter hole that fits a 3.5" standard draining system. The finish is in a natural-looking copper color, mostly reddish and a few dark spots here and there. It will add a unique home accent making it a focal point in your kitchen."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