Ohira Japanese Whetstones come from the Ohira mine in Japan. These are the ultimate finishing stones, and will leave a completely unique scary sharp finish on your knives.
These stones are massive bench stones ready to last a lifetime. Each is unique with its own characteristics, but average about 10000 grit like finish. Offer them in soft, medium, and hard. Soft is best for beginner sharpener, medium for advanced, and hard stones are good for honing razors, or advance sharpener that know they want a hard stone.