PREMIUM MATERIAL: Made of Stainless steel, high temperature, -, not easily deformed, reusable and no rust. WIDELY APPLICATION: perfect for creating tarts, cakes, mousse and desserts. Excellent for baking, layering, and molding. VENTING HOLE DESIGN: The cake ring has a venting hole design, and the venting holes are evenly distributed and ventilated without leaking. TART RING: You get 30 tart rings in 2 shapes (boat shape & triple-cornered), meet your different need. Enjoy your baking time with your family. EASY TO USE AND CLEAN: More easy to release and convenient to use. Easy for cleaning, oven and dishwasher safe.