100 piece Aluminum Foil Muffin Cupcake Ramekin 4 oz Cups Disposable Accommodates hot or cold foods Top circle diameter is 3.2";Bottom circle diameter is 2.2";Height 1.7" Aluminum Foil Muffin Cupcake cups 100 pieces Ramekin 4 oz Cups Disposable 100 pieces these are great for baking and the right size for serving. This product is made of high quality Aluminum.. With these mini cups, you can make and carry your own muffins/cupcakes easily instead of using the soft and sticky paper cups. Flexible and non-stick. Baked goods Pop-Out easily Excellent heat conduction. Light weight but sturdy. Stronger than the normal paper liners. Oven, Refrigerator and Freezer Safe