Thanks to the EGGspander system, turning your EGG into a fire brick oven is as simple as slotting this half moon baking stone into the convEGGtor basket. But the real beauty of the Stone is this: you can cook indirect on one half of the cooking grid, while keeping the other half of the grid available for roasting meats or vegetables. Limitations? What limitations? Bring two Half Moon Ceramic Baking Stones together to transform the EGGspander System into a convection oven, just like the convEGGtor!