Famous Ohira Uchigomori Koppa sword Grade.
Very old stock Uchigomori, without any toxic inclusions at all, make super nice and hazy finish.
Sutch stones is very rare now and find them so clean is almost impossible.
This one is extra fine ! probebly finest uchigomori i have tried ! And also super fast as you can see in swarf pictures !
Super clean, Flat, light Gray color with a lot of range in it !
Quite fast for Uchigomori stone !!
Size : 145mm 78mm 18mm