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NANIWA Gouken Sharpening Stone

Grit: 4000 Grit

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Product Information

  • Brand:NANIWA
  • Model:QA-0354(4000 Grit) / QA-0358(8000 Grit)
  • Material:White Aluminum Oxide
  • Product type:Sharpening Stone
  • Country of origin:Japan
  • 4000 Grit:Dimensions (approx): 210 x 70 x H20 mm, Grit: 4000 grit, Item weight (approx): 600 g, Shipping weight (approx): 780 g
  • 8000 Grit:Dimensions (approx): 210 x 70 x H20 mm, Grit: 8000 grit, Item weight (approx): 600 g, Shipping weight (approx): 780 g

Key Features

  • A perfect sharpening stone for refining the knife edge for extra sharpness.
  • Made of fine abrasive particles, you can sharpen and refine the blades for maintaining the sharp edges.
  • You can use it to sharpen scissors and other types of blades, other than knives.

Use & Care

  • Soak it in water for about 3 min prior to use so that the stone is saturated with water.
  • Sharpen your knives with it while splashing water as you work.
  • Please always use it on a flat, stable and non-slippery surface.
  • Wash it well with water after use. Let it air dry and store it in a place out of direct sunlight.
  • In case a part of the stone is chipped after a fall, for example, make sure to smooth out the chipped part so that the blade won't be damaged when sharpening with it.


Since its establishment, Naniwa Abrasive Mfg. Co.,Ltd. has been dedicated to the development and manufacture of grinding and polishing technology and tools. They have an integrated system from production to sales of a wide variety of grindstone or diamond tools.