18/10 Stainless Steel Polished Interior and Exterior. Triply (encapsulated) construction top and bottom with 5 mm Aluminum insert to provide better heat transfer and no hot spots. Volume: Bottom 7 Quart and can be used as a Sauté Pan or Stock Pot. Top 3 Quart and can be used as a Sauté Pan, Open Casserole or Serving Tray. Includes rack. Specially designed to hang on the edge of the Multi Roaster for draining or cooling purposes.