Cangshan 3-in-1 simple-to-use sharpener restores a factory edge to any knife in your collection, even kitchen shears. This all-in-one tool has two stages each for Asian or Western blades. A unique handle-shaped grip helps keep fingers safe, and a nonslip rubberized base provides stability on the work surface. It is recommended to sharpen your kitchen knives at least 2 times a year to ensure that the knife blade is cutting properly.