Yoshihiro High Carbon Blue Steel Mizu Yaki Aonamiuchi Yanagi Sashimi Chef Knife 13IN(330mm) Yoshikuni Series with Ebony Handle Grade: Aonamiuchi / Knife Type: Yanagi Knife Blade Material : Aoko 1 (Blue High Carbon Steel #1) Namiuchi Forged (Wave Pattern Forged) Blade: Single-Edged / Includes Free Tsubaki Knife Oil and Sabitori Rust eraser Knife Care Kit Handle Material: Premium Ebony/ BOLSTER: Water Buffalo Horn (BOLSTER COLOR -VARIES) Hardness Rockwell C scale: 63-64 / Country of Origin: JAPAN