It is designed to fit securely on crucibles with a 60mm diameter, providing an essential tool for high-temperature applications in laboratories. Made from durable porcelain, this lid offers excellent resistance to heat and chemicals, making it ideal for use with crucibles in heating, calcining, or melting experiments. The 64mm diameter ensures a snug fit, helping to prevent spills and maintain sample integrity during processing. This porcelain lid is an indispensable accessory for laboratories requiring reliable, durable lids for their crucibles.