Yoshihiro Aonamiuchi Aoko Blue High Carbon Steel 1 Kiritsuke Sword Japanese Sashimi Sushi Chef Knife 11.8 Inch (300mm) Yew Handle Grade: Aonamiuchi / Knife Type: Kiritsuke ( Multipurpose Chef )Knife Blade material : Aoko(Blue Steel 1) High Carbon Steel Blade: Single-Edged/ Blade Length: 11.8inch (300mm) BOLSTER: Water Buffalo Horn (BOLSTER COLOR -VARIES) / Handle Material: Octagonal Shaped Japanese Yew Hardness Rockwell C scale: 64 / Saya Cover : Included