The Prestige Inspire 12 cup muffin tray has been manufactured using heavy gauge carbon steel, guaranteeing exceptional heat conduction and long lasting performance. This muffin tin is freezer and refrigerator safe, and incorporates a superior non-stick coating inside and out, ensuring easy cleaning and excellent food release. Key FeaturesMade from heavy gauge carbon steel for exceptional heat conductionSuperior non-stick inside and out for easy food releaseFreezer and refrigerator safeOven safe up to 240C/475F/Gas Mark 9Long lasting performance – 25 year guarantee MANUFACTURER'S CODES57901 (12 Cup Muffin Tray) 893946