"Ooban" is very Rare size of the stone, HUGE stone
This Size is super Rare for Jnats thats why the high price !
This one is Just perfect rectangular amazingly clean, first time i see so clean stone that is so big
Very nice stone for beginners in Japanese Natural stones.
Super easy to use on tools and knives !
Produce mud quickly without using Nagura and quite fast stone too !
Makes very nice hazy kasumi finish, and very nice stone for Honyakis or laminated blades.
Beautiful light yellowish colors. Very smooth feeling while sharpening !
No lines or inclusions at all !
Colector Grade !
Size: 270mm 120mm 40mm