Double-sided sharpening stone: package includes 2 sharpening stones, 400/1000grit, 3000/8000grit. 400 grit/1000 grit is used for sharpening and repairing large gaps. 3000 grit/8000 grit for fine grinding, repairing large gaps and polishing.
White corundum material: this kind of grinding stone is made of white corundum, which with high hardness and sharp edges and corners, which can help you sharpen your tools more quickly.
Sharpening steps: soak the whetstone in water for about 15 minutes first, and add some salt water to it; place the cutter on the sharpening stone at an angle of 10-20°; note: don't scrape off the mud after sharpening because it can help better sharpen.
Bottom non-slip holder design: you no need to worry about the sharpener will running away when you grind hard, it is labor-saving. it is suitable for household tools, scissors, precision tools, carving, and gardening tools.