Oboro Knife #400, 4.4mm

Oboro Knife is a sharpening stone created by the founder of Tosho Knife Arts, along with sharpener Ivan Gomez Fonseca (@toshoworks), specifically for sharpening kitchen knives.

The diamonds are abrasive to match the hardness and steel of the kitchen knife, and are neither too soft nor too hard, making them ideal for sharpening kitchen knives.

Designed for rough sharpening of kitchen knives made from various types of carbon steel, including semi-stainless steel and traditional Japanese steels. The hardness and sharpness are the advantage of diamond stones can be maximized.