Iwaki Glass Square Gratin Dishes, Set of 2 (Heat-Resistant Oven Toaster Dishes) Brand: Iwaki Material: Heat-resistant glass These were used at home. I didn't notice it usually, but this time, upon closer inspection, there are a few cutlery scratches and small white spots. They are used, but please consider them if you're interested. They are sized to fit two in an oven toaster. Because they are made of heat-resistant glass, you can use them directly from the refrigerator in the microwave or oven. Of course, they are also safe for boiling water. Since the glass is resistant to acids and salt, it will maintain its beauty for a long time. Even with dishes with strong colors and odors, such as curry or ketchup dishes, you can easily remove them just by washing.