Japanese natural whetstones Nakayama Koppa NK7
This is the raw stone from Kato's Mine which is currently being processed. Selected and tested, stamped with Kyoto Natural Whetstone Association. This is the Aisa layer between Tomae and Namito. Moderate hardness, fast, silky smooth and very fine grain but the base is not flat so it will wobble. This is a good quality finishing stone.
Size: 150mm(L) x 79mm(W) x 32mm(H)