Product Description Constructed of thick 1/2-inch clear high tempered glass, Imponeren has a classic etched design. As an industry leader, Novatto uses advanced technology to produce beautiful glass vessel sinks with unmatched structural integrity and longevity. Tempered glass cannot be compared to everyday synthetic porcelain and ceramics. Internal testing has found these vessels to be very durable and forgiving. Items such as toothbrushes or small jewelry should not scratch the surface. Made with the highest standards of quality and creative design, Novatto sinks add art and function to any decor at an affordable price. The Imponeren vessel has a standard 1.75-inch drain opening. The set includes a brushed nickel pop-up drain and matching mounting ring. From the Manufacturer The perfect combination of quality and design, Novatto sinks, faucets and accents add a splash of art and function to any bath or kitchen. Novatto continually searches for new products and trends that not only surpass industry standards but exceed expectations. We believe in only the highest standards and love what we do. Committed to product excellence and customer satisfaction, we strive to improve every aspect of life.