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 Ebony wood handle of the highest quality and affixed with a Water Buffalo horn bolster. This knife comes with a rare artisan crafted Saya, a protective wooden sheath made of premium Ebony wood 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, and is one of the most essential of traditional Japanese knives and is a powerful component in the repertoire of many chefs. The beauty of its elegant thin blade is its ability to slice through an ingredient in long uninterrupted strokes, preserving its integrity and freshness. The Yanagi Kiritsuke is slightly heavier with a with a blade that is wider and a spine that is thicker. The sword tip helps balance the weight of the knife and is recommended for chefs who are interested in a Yanagi but have a smaller working space. Even the simplest of tasks are elevated with a handcrafted knife that is as beautiful as it is functional.