W8 double sided (combination) diamond whetstones will not break, chip, crack, hollow or groove. These ultra precision whetstones are lightweight & have a totally rigid construction. Use water for lubrication no oil, smell or mess & can hone ALL hard materials: carbide, steel, the grits are denoted by a dual coloured circle which is set into one end.
Black: Extra Coarse Grade 220, 60 micron
Blue: Coarse Grade 325, 45 micron
Red: Fine Grade 600, 25 micron
Green: Extra Fine Grade 1200, 9 micron
The green side (Extra Fine) is suitable for general carpenters tools, wood flat bits, auger bits, garden tools, darts, fish hooks, masonry drills etc.
The blue side (Coarse) is suitable for knives, woodworking tools, T/C tooling etc.
Blue: Coarse 325g, 45 micron
Green: Extra Fine 1200g, 9 micron