The Hammerworks Sierra Vessel Sinks by Houzer are available in two attractive living finishes: Antique Copper and Lustrous Pewter. The finishes are referred to as living because they change to varying hues of patina through the years of use, while the durable craftsmenship ensures that the sink will last for generations to come. The vessel sink has a unique flat bottom design that eliminates the need for a trim ring. Also included with the sink is a overflow that prevents the bowl from spilling over. The drain opening measures 1½" in diameter with a 6" bowl depth and an overall bowl diameter of 16". The Sierra Vessel Sink ships via UPS.