Restaurant-tested by professional chefs, DuPont Autograph2 Nonstick is safe for use with metal utensils. It surpasses all other standard nonstick formulas, providing maximum food release and easy cleaning. Hard-anodized construction is twice as hard as stainless steel and heats quickly and evenly. "A layer of aluminum is encapsulated with copper, followed by more aluminum and finished with an impact-bonded stainless steel cap. This unique combination offers outstanding heat distribution and controlled cooking performance. Suitable for all cook tops including induction. " An elegant stainless steel lid fits securely to the pan to lock in flavor and nutrients. The refined lid handle has extra clearance for easier and safer fitting. "The cast stainless steel handles are attached to the pans using innovative nonstick flush rivet technology - food won't get stuck around the rivets so the pan cleans up easier. Oven safe to 500º F"; Lifetime Limited Warranty. This unique combination offers outstanding heat distribution and controlled cooking performance; Suitable for all cook tops including induction.