The use of a whetstone is an effective way to get the edge of your knife back into shape.
More information and instructions for use are to be found at our Info-Center.

Coarse and Fine Grain F240 / F800 J400 / J2000	Coarse and Fine Grain F400 / F1000 J1000 / J3000	Coarse and Fine Grain F1000 / F2000 J3000 / J8000
4450	4451	4452