Made from professional grade white corundum, this double sided stone is corrosion and heat resistant. Maximize versatility with two grits. The coarse 1000 grit side leaves metal edges with a frosted appearance equivalent to the factory edge on knives and tools while the fine 6000 grit side is ideal for honing the blade, resulting in a very sharp edge. With a non slip base, safely sharpen kitchen knives, kitchen shears, Wusthof chef knife, pocket knives, straight razors, precision tools, garden tools, chisel and even an axe.