Circulon has been providing the same excellent quality for over 30 years and this Momentum square cake tin is no different. Each brownie tin features our total non-stick technology which offers exceptional food release and an easy clean up. The reusable baking sheet is made from heavy gauge, durable carbon steel that is extremely long-lasting - one of the toughest on the market today. We've designed this set to deliver an unparalleled baking experience making it one of the best on the market. These roasting tins for ovens non stick also come with our hassle free Limited Lifetime Guarantee! Product specification: Oven safe: 230°c / 450°f / gas mark 8 Material: carbon steel Dimensions: small - 9" x 6" / large - 11.5" x 17" Non-stick: yes Dishwasher safe: yes