STYLISH APPEARANCE AND DESIGN: The drop in bathroom sink is enhanced with Glossy black finish outside and an attractive oil rubbed royal metal finish inside. Perfect to upgrade your home, condo, apartment, restaurant and bed and breakfasts. EASY INSTALL: Designed for easy DIY installation as a luxurious above counter vessel sink. Includes cutout template for installation; does not include mounting ring and does not include drain. Outer dimensions: 16 inches x 16 inches x 6 inches height. Inner dimensions: 15 inches x 15 inches x 5.5 inches height. DOUBLE WALL Bathroom sink drain hole measures 1 5/8 inches without overflow. As metal sinks are not as thick as porcelain or stone sinks, please make sure the drain you purchase has threading all the way to the top. Care Instructions: Simply wipe the surface of the bathroom drop in sink surface with a damp, soft cloth to keep it looking beautiful with minimal maintenance. DO NOT use corrosive / abrasive cleaning liquids or material as that will damage the copper finish. Note: Copper is a living material and our sinks are hand finished - as such, there will be a slight variation in color from sink to sink. Copper will oxidize and darken over time due to interaction with water/air.