20 1/2 Inch Solid Copper Concave Undermount Sink (Satin Nickel Finish) - this sink is made from solid copper with a stylish hand hammered texture. It measures 20 1/2 inches wide by 17 inches deep by 6 inches high. Its drain size diameter is 1 5/8 inches. This style of sink is shown in a Satin Nickel Finish and it comes in several other finishes. The matching finish overflow tube is included. A matching drain plug is available (not included).