Ooni 13" Pizza Steel. This product is designed for use with home / conventional ovens only and is not compatible with Ooni pizza ovens. Commercial-strength 430-grade stainless steel. High quality and durable cooking surface optimized for baking pizzas. 6mm thick baking steel retains heat for crispy, evenly cooked pizza bases and quick recharge time between pizzas. Optimized for conventional oven temperatures up to 525 F. Enjoy delicious, evenly cooked pizza indoors, any time.