The Nantucket Sinks USA Double Bowl Prep Station Topmount Kitchen Sink doubles as a sink and a workspace. Perfect for your gourmet kitchen, this deluxe sink is sleek, stylish, and loaded with kitchen-savvy features. It includes two tempered glass cutting boards, a sliding stainless steel colander, and flip-top drains. The sink is made of naturally sound-absorbing, nonporous white granite. The material resists stains, scratches, and can withstand both thermal shocks and temperatures up to 560°.