I believe these items are about 50 years old, but I'm not certain. They were used to hold kettles and pots, placed in the ash of a sunken hearth or a brazier. The larger one has a diameter of approximately 22 centimeters and a height of 17 centimeters. The smaller one has a diameter of 15 centimeters and a height of 13 centimeters. I believe they are made of iron and are quite rusty. They seem to sit level when placed on a flat surface. I have cleaned them, but there may still be some remaining dirt. They are very old items, from many decades ago. Please understand this before purchasing.