1.HEAVY-DUTY & DURABLE ALUMINUM TIN FOIL: These mini pie tins are made of high quality and durable food-grade aluminum foil. The pie plate will not bend or fold during baking. 2.DISPOSABLE USE AND EASY CLEAN-UP: When preparing for large family gatherings or outdoor activities, convenience is a big advantage. It's good to use disposable ones, so you can throw away mini pie tins when you're done. 3.SUPERIOR HEAT CONDUCTIVITY: Provides uniform heating properties, prevents filler flow, and ensures a nice crisp crust that can withstand temperatures of up to 500 degrees Fahrenheit each time; Safe to use in refrigerator and oven. 4.DIMENSIONS DISPLAY: With a top diameter of 5 Inch and a bottom diameter of 3 Inch, this disposable tart pan is a small, round baking pan that is perfect for making pies, tarts, pies, personal-size cakes and more.