The Transolid Select drop-in sink is constructed of 22-Gauge 304 stainless steel. It features superior undercoating for added sound insulation with 3mm sound deadening pads on all 4 sink sides and bottom. The brushed finish brings luster to the kitchen and generous corners provide quick cleaning. All Transolid stainless steel sinks offer a lifetime warranty. Color: Brushed stainless steel.