General description The DMT DMT-W8ECNB Double Sided Diamond Whetstone is a versatile sharpening tool designed for both general and specialized applications. It features two sides: the green side (Extra Fine) is ideal for general carpentry tools, wood flat bits, auger bits, garden tools, darts, fish hooks, and masonry drills, while the blue side (Coarse) is perfect for knives and woodworking tools. Technical specifications Dimensions: 200mm Grits: 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) Weight: Blue side 325g, Green side 1200g Usage For optimal performance, use water as a lubricant during sharpening. This method eliminates the need for oil, reducing mess and odors. The whetstone can hone all hard materials, including carbide and steel.