Thank you for viewing. Introducing a natural whetstone from Kyoto Shobonzan. This is an item I received from a member of the association, a former Nakayama whetstone. It has a hard surface, strong abrasive power, and is a premium quality product. Size: 138mm x 60mm x 22mm, 403g Thank you for your consideration. ※ Received directly from a member of a Kyoto whetstone shop association. Please be aware of accounts selling stolen goods by foreigners.