The San Salvador is a square bar sink hand-hammered from 100% recycled, lead-free copper by master artisans. Through years of skill and experience passed down from previous generations, the end result is a one-of-a-kind work of art. Made from 16 gauge copper, the beautiful San Salvador has a warm antique finish and a 1-inch flat lip, allowing either drop-in or undermount installation. The sink has a 3.5" drain for standard U.S. plumbing connections. Copper is amazingly easy to maintain. Fingerprints do not show as they will on stainless steel and other metals. For basic cleaning, simply use soap and water. Copper has a "living finish" and its patina will continue to develop character over time, meaning it will become a richer, darker color. The patina creates a unique look of light and dark tones complementing each other. Made with the highest standards of quality and creative design, Novatto sinks add art and function to any room. Just add water and enjoy Novatto's lifetime limited warranty. Supreme packaging and boxing ensure damage-free delivery.