This is a Yamanaka-lacquered bowl that can be used as a soba kneading bowl or a serving bowl. I bought it new for making soba and used it as a kneading bowl about 3 or 4 times. Diameter is 31cm, height is about 7.5cm. I am selling it because I have been using another bowl more often. After use, I washed and dried it, then stored it in the included box, taking it out of the box each time I used it. Since it has been used, there are fine scratches on the flat surface and a small scratch on the edge (photo 4), but there is no peeling of the paint and it is in a clean condition. There are no other noticeable scratches or stains. There is a label on the box with a description of the product. Diameter: 31cm Base material: ABS resin Surface coating: Urethane coating Cannot be used for boiling, in the oven, or in the microwave.