Double Wall Design for sturdiness. Made of 16 gauge, 99.9% pure copper. Antimicrobial properties that helps prevent the bacterial growth. Square top open section with tapering depth. --This Square Double Wall Copper Sink Tapering Depth is an exquisite Copper Sink for those who love symmetrical geometric shapes. The Copper Sink has got following highlights: Double Wall Design giving you an extra sturdiness. Made of 16 gauge, 99.9% pure copper. Antimicrobial properties that helps prevent the bacterial growth. Square top open section with tapering depth. Maintenance & Cleaning Copper Sinks are low maintenance products. For cleaning your copper sink follow following methods: Get a pair of hand rubber or plastic hand gloves. Use mild detergent in warm water. Soak a soft cloth in mixture of warm water and mild detergent. Apply it throughout to cover the sink Rinse the sink and use a dry cloth or towel to remove the water droplets.