Japanese natural whetstones Ohira Koppa OHI4
Dark green small Ohira Koppa at affordable price.
Quite fast stone and this one is tad harder compared to OHI2 and OHI3.
Suitable for knives or tools.
Hardness: 3.5/5
Speed: 4/5
Finesse: 4/5
Size: 134mm(L) x 78mm(W) x 22mm(H)