STRONG & DURABLE MUFFIN PANS – These aluminum muffins cups are extremely sturdy and durable. They will not bend out of shape or spill any cupcake batter like paper cupcake liners. The 4-cup trays support any type of batter and will not leak or spill when putting them in the oven. The large cupcake cups make perfectly shaped bakery style muffins. Pan Size: 155 x 155 x 30mm (Approx) NON STICK, EASY RELEASE YOUR CUPCAKES & MUFFINS - The aluminum cupcake trays are smooth and easy to use. Simply pop the bottom up and the muffins or cupcakes will slide out quickly and easily. You can spray the bottom of the baking tin with some oil for even cleaner release of your muffins. ENJOY NO MESS MUFFIN MAKING – Washing up silicon muffin pans can be too much bother, especially if you are catering for a large crowd or party. Made with ecofriendly aluminum you can simply throw the cupcake tin in the recycling bin or trash can once finished. No more standing for hours washing out cupcake cups. BAKE OR COOK ANY TYPE OF MUFFIN OR MINI PIE - If you've been watching too much Cupcake addiction or are just obsessed with making breakfast muffins these are ideal for baking and cooking any kind you can imagine. Foil Muffin Pans can be used to make mini pies or mini quiches for kids, or a large batch of bakery style muffins to put in the freezer.