Diamond reinforced, non-stick Coated cast aluminum oval roaster with lid, 6.3-quart Ultra hard diamond crystals embedded in non-stick surface make it the most cut and scratch resistant coating available Diamonds conduct heat 4 times better than copper and brown food quicker; integral, threaded brass insert ensures the handles stay tighter Longer Natural non-stick properties of diamonds makes clean up easier, improves the release of food Made in Germany; oven safe to 500F/260 C; dishwasher safe; PFOA free; Limited Lifetime warranty