Bamboo basket: Inner diameter approximately 43cm. Strainer: Inner diameter approximately 31cm. Since these items are unused, I believe you'll be able to use them with pleasure. However, as bamboo products, some may notice minor surface fuzziness, scratches, or what appear to be initial stains. Although there is no sign of use, please understand that these are not new items, but rather pre-owned. I haven't used Mercari for about a year, so I may take some time to get used to transactions, but I will respond as quickly as possible. Thank you very much.