ROBUST: made of 1 mm-thick electroplated carbon steel, this mini muffin tin resists warping and rusting, and is oven safe to 220C. QUANTUM II NON STICK: removing baked cakes is easy with the double layer of this powerful non stick; it's PFOA, BPA and PTFE free too. LOOSE BASES: each of the 20 holes has a push-out loose bottom, so it's easy to remove mini muffins, cheesecakes or souffls. USEFUL INFO: measures 35 x 27cm (14" x 10"), with 20 holes measuring 4.5cm (2") wide and 3cm (1") deep; dishwasher safe. MasterClass Non-Stick 20 Hole Mini Muffin Tray with Loose Bases, Carbon Steel in Black