Sinara Traditional Single Bowl Standard Radius Undermount 304 Stainless Steel Kitchen Sink - DSR-3121 The original sweeping standard radius 304 stainless steel sink is a beautiful option for today's kitchen design. These sinks have lasted the test of time and still maintain as the number one installed sink nationally. A molded bottom creates an even flow of water to the Signature 3.5″ Drains. The Peacekeeper Sound Absorption System provides noise reduction and tranquility enhancement while keep condensation from gathering underneath and damaging your cabinets.