Netherton Foundry Compact Baking SheetShropshire Made Black Iron Baking Sheet Heavy duty, 2mm thick black iron sheet. A compact baking sheet for small ovens and smaller baking challenges. Perfect for biscuits, breads, pastries and much more. Pre seasoned with flax oil for a natural non stick finish Durable 99. 1% pure black iron with a brass Netherton branded rivet Heavy duty and thick sided, for superb, even baking. Can be used in very hot ovens, safe up to at least 300 C (572 F). 3 4"