The process of clay tempering this T10 carbon steel blade gives it the strength and flexibility, which is the hallmark of a high-quality sword. Through this differential hardening process, clay is used to create the difference in temperature on the edge and the spine of the blade to achieve a blade that is a masterpiece of perfection. It just doesn’t get any better than this! You're getting 28 1/3” of sheer beauty and power! The katana is further elevated by the keen attention to detail in the iron tsuba’s design. The tsuba is accented with a brass blade clip and menuki. The handle is ray skin wrapped in soft blue cord. Its perfection is completed with the royal blue lacquered wooden saya. Measures 41 1/3” long overall.