1. Made of high quality stainless steel, it is not easy to rust, , smooth ,easy to clean and safe for oven and dishwasher. 2. Cake ring has a venting hole design,The clever addition of perforations improves this classic and fundamental mold and the venting holes are evenly distributed and ventilated without leaking 3. perfect for creating tarts, cakes, mousse and desserts. Excellent for baking, layering, and molding.