... any surface, horizontally, vertically even upside down. The tungsten carbide blades adjust to sharpen knives, scissors, shears, and ... any surface, horizontally, vertically even upside down. The tungsten carbide blades adjust to sharpen knives, scissors, shears, and ... onions, peppers, bread and so much more! Features: Tungsten Carbide steel sharpening blades Suction cup on base holds Samurai Pro ...