With their tough core and hard-wearing finish, the MasterClass Professional Vitreous Enamel range you can count on consistently crisp, succulent roasted meats, and perfect bakes for years and years. Theyre manufactured from heavy duty 1 mm thick steel coated with a premium performance vitreous enamel layer. An excellent heat conductor, they absorb and distribute the heat from your oven evenly to provide you with superior results. The vitreous enamel layer, combined with their strong core, give them durability to withstand bumps and scrapes - whether you're cooking at home in the kitchen or in a fast-paced commercial kitchen. You can also use metal utensils without the risk of scratching them. Nothing sticks to their vitreous enamel coated surface, allowing you to simply pick your food up for serving. You can either pop them in your dishwasher or rinse with warm water.