6,000 grit gives a toothy fine finish with it's mix of natural and synthetic abrasives. Best results are had with a nagura stone to condition the surface of the finish stone and speed polishing.
Ohishi series stones are made by Imanishi in Kyoto for Akifusa. They are formulated to work on a wide variety of steels and knife types; they are harder and denser than the older style 'muddy' synthetic stones, yet softer and more yielding than some of the harder ceramic stones. Ohishi stones are made with 100% Japanese abrasives; a mix of natural and synthetic. They work best if soaked for several hours, despite other sellers claims. These are used regularly by our shops busy sharpening service.