Grindstones for Professional Use: “KOTEI”


Enjoy more with maximum sharpness.

The highest quality diamond grindstone developed with the latest advanced ceramics technology


By bonding ultrafine diamond with advanced ceramics, this stone offers a high degree of bonding in addition to a long life span.
It is the only grindstone of this size in the world to be commercialized with the advanced ceramics bond type (according to our company’s research).

  • (1)It features a smooth sharpness as the blade will be unlikely to scratch.
  • (2)The blade can be sharpened in a short amount of time due to the unlikelihood of glazing in the abrasive.
  • (3)The life span is longer compared to traditional resinoid diamond grindstone.

Application:High-quality knives, hairdressing scissors, carpentry tools
Dimensions: 200x70x20x3mm

Item Code Application Grit Surface Roughness (our company comparison)
Item Code Application Grit
AVN-51 Rough Finish #1000 Resin Bond Type#600 (proportional)
AVN-55 Medium Finish #3000 Resin Bond Type#2000 (proportional)
AVN-59 Finish #5000 Resin Bond Type#3000 (proportional)
Specially ordered item Super Finish ~#12000 Resin Bond Type#8000 (proportional)