Our handmade Yoshihiro Aonamiuchi Blue Steel knives are crafted with extraordinary skill by our master artisans. Aoko Blue Steel #1 with a hardness on the Rockwell scale of 63 to 64, is intricately forged with iron to create beautiful wave like patterns. It takes a very high degree of skill to create knives of exceptional performance with such exquisite beauty. Namiuchi means wave forged, and our master artisans blend aesthetics with the highest quality materials and and craftsmanship. Our Yoshihiro Aonamiuchi Blue Steel knives are complimented with a traditional Japanese style handcrafted Rosewood handle 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 Mioroshi knife is a longer and sleeker version of a Deba knife. The Mioroshi has enough heft to filet whole fish and cut through the cartilage and bones of fish while also being long enough to be used as an all purpose knife.The Mioroshi knife can used be for chicken and meat but is not recommended for cutting through large bones. Even the simplest of tasks are elevated with a handcrafted knife that is as beautiful as it is functional.