The Rustic Rectangular Stone Vessel Sink will add a touch of nature to your bathroom project. It is made from one solid piece of travertine. It has a polished interior and rustic exterior. Each sink is unique and considered an individual work of art. Please note that there may be variation in stone color and veining.•The drain hole diameter is 1.75 inches.•A 1 5/8 in. Non-Overflow bathroom sink drain is required.•No mounting ring required.•Faucet not included.