Shapton Kuromaku Roughing Stone
KUROMAKU is the world's first set of colour-coded sharpening stones, each colour representing a different grade of coarseness.
The storage case makes it easy to carry the stones, and can also be used as a sharpening base.
These stones are waterstones but can also be used as oilstones.
Long-selling classic solid stone. Comes with a plastic case usable as a stone holder