This is a Japanese-made serving bowl/kneading bowl with an outer diameter of approximately 25cm (inner diameter approximately 22.5cm). Please note that the size is approximate due to amateur measurements. I purchased two of these, but I am selling one as I didn't use it. It's very easy to use for making soba noodles or kneading dough. I will ship it in the box shown in the photos with cushioning material. ・Material: ABS resin, urethane coating Although it is a new, unused item, the box is slightly damaged. I only opened it to take the photos. Thank you.