Thank you for viewing! This is an unmarked item from a famous Kyoto manufacturer. Grit is #8000. This is a domestic product made to order by a member of the Kyoto Natural Whetstone Association. This is a newly unearthed item, and there may be slight stains or chips. The quality is the same as the genuine product. Size: 207mm x 77mm x 26mm. Brand new, unused.