Yoshihiro High Carbon Blue Steel Hongasumi Takobiki Sushi Sashimi Japanese Chef's Knife 13inch(330mm) Grade: Hongasumi / Knife Type: Takobiki (Sushi Sashimi Slicing) Knife Steel Type: Ao-ko (Blue steel #2) High Carbon Steel Blade: Single-Edged / Blade Length: 13" (330mm) BOLSTER: Water Buffalo Horn (BOLSTER COLOR -VARIES) / Handle Material: Octagon Shaped Magnolia Hardness Rockwell C scale: 63-64 / Saya Cover : Included