Naniwa P-308 Professional Stone #800

by Naniwa


Naniwa P-308 Professional (Chosera) #800 Stone is Ryky’s favorite splash-n-go / non-soaking sharpening or medium grit whetstone. It is responsive, fast cutting, and able to handle knives of all Rockwell ratings (testing up to 67 HRC).  It was Ryky’s top sharpening whetstone for 3 years in a row, very few stones come close to offering this level of performance at any price point.

Made in Japan


  • Origin: Osaka, Japan
  • Grit No.: #800 WA
  • Type: Splash & Go
  • Dimension: 210 x 70 x 20mm (8.2 x 2.7 x 0.7")
  • Weight: 745g (26.27oz)
  • Abrasivewhite aluminium oxide 
  • Cohesive agent: magnesium-bound

How to use:

Do not soak this whetstone. Simply apply water on the surface when ready to use. Rinse and wipe dry with a hand towel when done, and allow air dry at room temp. Do not leave in water.

How to clean:

If the stone’s performance is slowing down, or seems to be diminishing, you can clean using a rust eraser,  nagura stone, dressing stone, or a flattening plate. Be sure to clean the entire surface of the whetstone when using any of these methods to ensure even wear of the whetstone’s surface.

Customer Reviews

Based on 1 review
Amit Reches (Haifa, IL)
Great products, thank you very much

The stones arrived so quickly!!! I really enjoyed the buying at burrfection!

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