Cast Aluminum Saucepan Set has a 16 cm Granite Coated 4mm Aluminum Body. Use and Maintenance: When using your aluminum casting pans, do not contact them with sharp, hard or metal materials (knife, fork, metal spoon, metal ladle, etc.). Use warm soapy water to clean. Do not use harsh cleaners. For stains that do not come off, hot vinegar water is recommended. It is suitable for use in the oven. Features: It is a coating reinforced with granite particles. Thus, it provides a longer lifespan. It can go into the oven without a lid. It offers long-term non-stick performance. It has excellent scratch resistance. Allows cooking on electric, gas, halogen or ceramic stoves