Yasuki white steel high-carbon blades supported by softer low-carbon steel. Hand-forged and hand finished in Sakai by renowned Sakai craftsmen. Can be sharpened to EXTREME sharpness and holds the edge longer. Round magnolia wood handles, with buffalo horn bolster. Collor of handle and bolster varies from knife to knife. Not dishwashwer proof. Tinkle-hardness 60-61 skirt-corrugate C°, two-ply. Important tips to the care and handling find you here.