Naniwa Chosera #400 Grit Japanese Whetstone SS400

Sale price$105.00 Regular price$134.00
  • Premium Naniwa Chosera #400 Grit Japanese Whetstone SS400
  • Exclusively offered to the Japanese sharpening market
  • Renowned for exceptional feedback and fast action
  • Varied hardness across grits for optimal sharpening on harder or softer steels
  • High grit density and recommended quick soak before use
  • Large size of 210 x 70 x 25mm for extended stone life
  • Reserved for professional sharpeners in Japan

The Naniwa Chosera #400 Grit Japanese Whetstone SS400 is a premium-level stone highly regarded in the Japanese sharpening market. It is specifically designed for stock removal, repairs, and (re)profiling of blades. With its solid, hard, and aggressive characteristics, this stone offers exceptional durability and maintains its effectiveness over time.

Featuring a size of 210 x 70 x 25mm, the Chosera #400 offers an extended lifespan compared to other stones on the market. Its unique hardness allows for efficient removal of deeper scratches from diamond plates. When used with some mud, it leaves a reliable and basic working edge, making it a true workhorse for sharpening tasks.

  • Level of Abrasion: Coarse Grit (#400)
Model SS400
Size 210 x 70 x 25mm
  • 1x Naniwa Chosera #400 Grit Japanese Whetstone SS400

We recommend soaking the Chosera #400 Whetstone for 2-3 minutes before initial sharpening. After soaking, you can splash water on the surface to keep it wet. This stone works best with a quick soak. While sharpening, the stone's solid and aggressive nature ensures efficient stock removal, repairs, and (re)profiling. After finishing sharpening, clean the stone and allow it to air dry naturally in a shaded position. Avoid rapid drying to prevent potential cracking, and do not leave the stone in water, as it can degrade its quality.


  • FREE Standard Delivery Over $200
  • FREE Customer Pick-Up (Syd Only)
  • Same day dispatch until 2PM AEST (Mon-Fri)

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Same day dispatch until 2PM AEST (Mon-Fri)

*Delivery estimates provided by Australia Post

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Customer Reviews

Based on 3 reviews
Steve O

Well worth every penny

Cooper H

Hassle-free setup and operation

Peter F

Very high quality

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