Size: 10X10X4 inches. Drain hole size is 1.50" USA Europe Plumbing Standard, Shown drain cover is not included. Imperfections to be expected due to hand making.Copper has the best combined properties of any other metals as it is durable, recyclable, earth friendly, natural and reusable. Copper has been used for buildings, bridges, weapons, decorative jewelry and hand tools for long time through history. Copper is highly sensitive to heat conduction, spreads heat evenly and saves energy. Copper cookware comes in original bare surface or tin lined based on type of the food. Copper reacts with various elements through time. Natural copper oxidation will add beauty to any decor. Enamel clear wax will help to minimize the oxidation process. Copper maintenance includes avoiding water spots and using soft cloth and regular water to clean copper surface. Our copper bathroom sinks products are lead and mercury free, eco-friendly and green solution to implement the practices that will lead to healthier living for the planet and our future generations. We do not use recycled copper to hand make our copper sinks. We use pure, virgin unsealed copper.Our sinks come with a connecting ring that acts as an interface between the rounded bottom of the basin and the flat counter top for easy installation. It serves both as the drain opening as well as the anchoring mechanism that holds the sink in place on the counter top. A mounting bottom ring is not necessary and may be added for additional sink security.