These pastry ring are made of heavy gauge food grade Stainless Steel and are designed for baking and stacking. A pastry ring is a handy baking accessory, which can be used to shape pastry and hold it together during baking or assembly. When a pastry ring is used in baking, it holds the pastry as it bakes, ensuring that it bakes into a specific desired shape, rather than a blob. Stacks are a spectacular way to present food and will earn you a reputation as a restaurant-style cook. They can also be used to create a molded tower of stacked savory food items for an interesting presentation at the table.Top rack dishwasher-safe.