Magefesa Chef Aluminum, 23-Quarts, Fast Pressure Cooker 23-Quart capacity pressure cooker with classic round design made from premium quality aluminum; gravity pressure control system Three safety security systems including progressive lock system and safety clamp Reduces cooking time up to 70 percent over standard covered pans; also helps reduce energy use and co2 emissions 18/10 stainless steel lid; easy grip handles Hand washing recommended 23-quart capacity pressure cooker with classic round design made from premium quality aluminium; gravity pressure control system Three safety security systems including progressive lock system and safety clamp Reduces cooking time up to 70 percent over standard covered pans; also helps reduce energy use and CO2 emissions 18/10 stainless steel lid; easy grip handles Hand washing recommended