The Roshco Set of 12 Mini Tart Pans features a non-stick black carbon steel design with removable bottoms, making them easy to bake and clean. With a 4.75" diameter and a capacity of 6 oz, these round tart tins are suitable for use in steam, electric, and gas ovens. The set includes 12 tins, each measuring 4" in length and .75" in depth, perfect for baking mini tarts and quiches with ease. These tins have never had anything baked in them.