Naniwa P-390 Professional Stone (Chosera) 10000 Grit Japanese Whetstone Knife Sharpener Extrema Ratio developed the first

Extrema Ratio developed the first knife of a new production line

XXCoarse - 100 grit: The Metal Excavator

Net weight: 25 gr

Compatible with Lansky Sharpening Systems

Naniwa P-390 Professional Stone (Chosera) 10000 Grit Japanese Whetstone Knife Sharpener Extrema Ratio developed the firstNaniwa's Professional Stone is their highest grade stone and the overseas model of their "Chosera" stone. 10000 Grit 210 x 70 x 20 mm Instructions: Splash stone with water before sharpening and continue to do so when sharpening. Naniwa Professional Stones do not need soaking as they have tightly resin bonded particles, making them more durable and effective than other makes. Made in Japan