Sakai Honkasumi Shiroko Deba Knife Japanese 120mm(4.72in) Size: 4.7" (120mm) blade Materials: Yasuki White-2 Steel Features: The Sakai Ajimasa manufactured genuine kasumi white steel series is made with a steel core and wrought iron surface. Its greatest strengths are its easy to sharpen and chip-resistant edge. Easier to sharpen and excellent for entry level chefs. Caution: These blades are the sharpest you can find, but they are not very resistant to rust, so please handle them with care. Please wipe thoroughly after use.