Our handmade Yoshihiro Blue Steel Suminagashi knives are crafted with extraordinary skill by our master artisans. Exemplifying the most intricate techniques of forging, layering, and hammering, Aoko Blue Steel #1 with a hardness on the Rockwell scale of 64, is forged with iron to create the most elaborate of finishes. Our Yoshihiro Blue Steel #1 Suminagashi knives are complimented with a traditional Japanese style handcrafted premium Yew wood handle of the highest quality affixed with a Water Buffalo horn bolster, and a protective wooden sheath called a Saya is included, which protects the knife and adds to its appearance when not in use. The Yanagi is a long slicing knife that was designed to slice thin slices of fish for sushi and sashimi. The beauty of its elegant thin blade is its ability to slice through an ingredient in long uniterrupted strokes, preserving its integrity and freshness. The Yanagi is one of the most essential of traditional Japanese knives and is a powerful component in the repertoire of many chefs. Even the simplest of tasks are elevated with a handcrafted knife that is as beautiful as it is functional.