The Managua round copper bar sink is hand-hammered from 100% recycled, lead free copper by our 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 Managua has a warm antique finish and a one-inch flat lip allowing either drop-in or under-mount installation. It has a 3.5" drain opening for a standard U.S. plumbing connection. 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. Supreme packaging and boxing ensure damage-free delivery.•Round bar and prep sink with 1-inch flat rim •Hand-hammered antique finish •Drop-in or undermount installation •Artisan handcrafted in Mexico•16-gauge recycled copper construction •Outer dimensions 15 x 7-inches•Inner dimensions: 13 x 6.5-inches •Standard U.S. plumbing connection •3.5-inch drain opening•Limited lifetime warranty