An Elkay Lustertone Classic Sink Looks As Great On Day 3,000 As It Does On Day One.•18-GAUGE STAINLESS STEEL: Highest quality 18-gauge thickness and Type 304 stainless steel for lasting durability, performance and lustrous beauty. The Rich, Uniform Grain Adds To The Beauty Of The Sink. Lustertone Stainless Steel 27 X 22 X 8 Single Bowl Dual Mount Sink With Perfect Drain Lustrous grain reflects light evenly for high shine.