Made from strong Japanese steel, the construction and design of the Induction 21 Steel cookware line guarantees superior quality. Each piece has copper melted into the steel, which effortlessly conducts heat quickly and evenly. Titanium is also added for strength and durability to endure everyday cooking. To ensure healthy cooking, the steel is nickel free to prevent allergic reactions to nickel.Oven and stovetop safe Nickel free Made from japanese steel which includes copper, titanium, and chromium Perfect for magnetic induction cooktops Hand wash only 8 DiameterCollection: Induction 21 Steel Color: Brushed Stainless Steel Dimensions: 15-1 5 x 8 x 2 Material: Japanese Steel Pattern: Solid Weight: 1.5