The NANIWA Yamato #400 Japanese whetstone is a compact stone designed to quickly restore the sharpness of knives, scissors, small tools, and precision blades. Its #400 grit offers excellent cutting power to correct a dull edge or prepare a blade for finer sharpening. Its magnesia formulation ensures effective abrasion, even on high-hardness Japanese steels.

Its lightweight format makes it ideal for daily use or on the go. Usable simply with water, without prolonged soaking, it provides a practical solution for maintaining kitchen knives, pocket knives, outdoor tools, and other precision blades.