Yoshihiro Shiroko High Carbon Steel Kasumi Takobiki Sushi Sashimi Japanese Chef's Knife 10.5 Inch(270mm) Grade: Kasumi/ Knife Type: Takobiki (Sushi Sashimi Slicing)Knife Steel Type: Shiroko (White Steel #2) High Carbon Steel Blade: Single-Edged/ Blade Length: Available in 10.5"(270mm) BOLSTER: Water Buffalo Horn (BOLSTER COLOR -VARIES) / Handle Material: Magnolia Hardness Rockwell C scale: 62-63 / Saya Cover : Included