Yoshihiro Aonamiuchi Blue Steel #1 Sakimaru Takobiki Sushi Sashimi Slicing Japanese Chef Knife Rosewood Handle (11.8'' (300mm)) Grade: Aonamiuchi / Knife Type: Sakimaru Takobiki/Takohiki (Sushi Sashimi Slicing) Knife Steel Type: Yasuki Aoko( Blue Steel #1) High Carbon Steel (The Best Knife Material) Blade: Single-Edged / Grade: Aonamiuchi BOLSTER: Double Bolster / Handle Material: Octagonal Japanese Shitan Rosewood Hardness Rockwell C scale: 63-64 / Saya Cover : Natural Magnolia Saya Included