Special steel means durability mixed with quality. The 18-8 stainless steel double boilers work well in a commercial kitchen for a variety of tasks. Count on the smaller 18-8 stainless steel double boilers to handle simple melting small amounts of chocolate to the larger versions that can handle and entire culinary treat. Each of the double boiler sets comes with a pan, the insert and the lid. It isn't unusual for a commercial kitchen to have more than one of the 18-8 stainless steel double boilers in a couple of different sizes based on the specific menu items and the needs of the chef.