This is a 3-piece set of Cozy Cook, Diamond Stone Coating, 7.9 inches (20 cm) frying pan, 9.4 inches (24 cm) and 11.0 inches (28 cm) deep wok pan. Set Contents: Cozie Cook, Diamond Stone Coating, Frying Pan, 7.9 inches (20 cm), Cozy Cook, Diamond Stone Coating, Wok Pan, 9.4 inches (24 cm), Cozie Cook Diamond Stone Coating Wok Pan, 11.0 inches (28 cm); Diamond Stone Coating Frying Pan: The hardest mineral in nature. The diamond is coated on the cooking surface to ensure durability and resistance to abrasion. Furthermore, the textured stone texture makes it harder to stick to foods. The exterior is coated with ceramic for exceptional stain removal and easy cleaning. This pan is both durable and functional. It also reduces approximately 25% of the weight compared to typical pans.