This item was stored at my parents' house. Please refrain from purchasing if you are looking for a perfect item, as it has been stored for a long time. This is a multi-purpose bowl by Yumi Katsura. It has a diameter of 14.5cm. It seems perfect for udon or oyako-don. It was tucked away in the back of the cupboard, so it doesn't seem to have been used often, but it doesn't appear to be brand new. Multi-purpose bowl set with a black and red floral design. - Quantity: Set of 4 - Color: Black and Red - Design: Floral - Material: Ceramic - Size: Hand-held size Thank you for viewing.