Used. 8" The copper core of this pan is incredibly responsive to heat, making this piece perfect for frying foods and cooking omelettes, or creating delicate sauces and reductions. Five-ply construction of securely bonded metals: a thick, extremely heat-responsive copper core sandwiched between two layers of highly conductive aluminum with an easy-clean stainless-steel exterior and interior that won't react with foods. Allows for the quickest heat-up time, maximum temperature control and rapid, even heat distribution. A ring of copper adds a finishing touch to the gleaming exterior. Riveted stainless-steel handle. Ideal for use on all cooktops, including induction. Commercial Grade: Thoughtfully designed and expertly engineered to meet rigorous standards and best practices from select commercial testing.