21 Inch Solid Copper Small Single Bowl Drop-In Undermount Sink (Antique Copper Finish) - this sink is made from solid copper with a stylish hand hammered texture. It measures 21 inches wide by 18 inches deep by 10 inches high. Its drain size diameter is 3 1/2 inches. This style of sink comes in an Antique Copper Finish. A matching drain plug is available (not included).