These stones have become the standard among Japanese due to their wide cutting surface, rapid cutting action and reduced wear. You may find this finish suitable for purposes where the keenest edge possible is not required. It is also suitable for touching-up an edge that does not require extensive work. The Aoto Natural Mountain Blue Stone removes scratches left by coarser stones and is the professionals' secret for obtaining a superior edge. Quite often, an edge which is beginning to dull can be touched-up on the Aoto, thus saving time and effort.
Size is approximate.
A nagura stone should be used in combination with this stone. In many situations, this rapid edge will be entirely suitable for job at hand. This stone is mounted on a plastic base. A nagura stone should be used in combination with this stone. This stone will give a brighter polish than any other stone available.