Part of thenon-stick cookware. They use small metal pellet impact technology to modify the surface to form an ultra durable rock-like finish. An outstanding release performance, 3x better than traditional non-stick cookware. Made of extra thick forged aluminum base with a Bakelite handle, oven safe up to 350F. It's the perfect companion throughout your day. Resists scratch & abrasion. Compatible with gas, electric, ceramic & halogen stovetops. Guaranteed never to warp.