This knife delivers Hongasumi grade high carbon steel sharpness and edge retention with stainless steel durability and ease of care VG Stainless steel blade with HRC 62-63 combines exceptional sharpness and optimal edge retention with stain resistance. Knife will become extremely sharp with whetstone sharpening and will glide through any type of fish with no pressure 10.5 inch (270mm) single edged blade with a traditional grind. Completely flat ground on front (SHINOGI), concave ground (URASUKI) with flat rim (URAOSHI) on the back Simple and elegant design with a handcrafted Japanese Octagonal Rosewood Shitan handle and a Double Ebony Bolster for a light and well balanced construction Lacquer coated magnolia wooden sheath provides odor and stain resistance with ease of cleaning. Hand wash only and sharpen on quality whetstones. Comes ready to use out of the box. 100% handcrafted in Japan. Not mass produced