Natural whetstone 24cm

"For the Opinel Knives to cut more
A natural stone of Lombardy of 24 cm. To use it wet, at an angle of 20 degrees with the blade.

  So you can sharpen your knives easily. These stones are known since the fifteenth century for their abrasive qualities. Made of quartz and coal, they allow to recover the net and precise cut of the utensils. "