The Rock's unique patent-pending Rock.Tec manufacturing process uses small metal pellet impact technology to modify the surface to form an ultra durable rock-like finish. The result is an outstanding release performance 3 times better than traditional nonstick cookware. The extra thick forged aluminum base give you everything you need for optimum heat distribution and ease of use. Included: 1 6 Qt. Stock Pot(s) With Lid(s) Features: Scratch Resistant, Non-Stick, Dishwasher Safe, Even Heating Cooktop Compatibility: Electric, Gas, Ceramic Manufacturer Warranty: 10 Year Limited Maximum Temp (f): 375 Degrees F Care: Dishwasher Safe Material: Aluminum Country of Origin: Imported