Designed for professional use (Thicker and heavier) Wok diameter: 14 inches (36cm) Depth from bottom to top: 4 inches *Wok is NOT recommended to be in the dishwasher so that the seasoning isn't removed during cleaning. *Wok is for gas stove. Its bottom is not flat for electric heat 100% Hand Made. Hand hammered and processed by traditional craftmanship through multiple days. You can recognize hand hammered surface, but still smooth by thousands of hammering. No Worry about Stick: There is no coating. Still non-stick. Reactive Iron Material will form a protective layer when used. The longer you use it, the better a wok works. This Wok is pre-seasoned. Blue black wok is fully prepared while white woks need a season process. You can just wash it with water and start to use it. Ideal size for restaurant and home: 36cm (about 14.20 inches) is the best size for professional chefs. This is a good size to cook for 6~7 dishes.