Yoshihiro Mizu Yaki Blue Steel Suminagashi Kurouchi Santoku Multipurpose Chef Knife 7 Inch Shitan Handle with Nuri Saya Cover Grade :Black Finish Kurouchi (Suminagashi) / Knife Type: Santoku (Multipurpose Chef Knife) Steel Type: Mizu yaki Aoko 2 Blue High Carbon Steel Blade: Double Edged (50/50) / Blade Length: 7 Inch (180mm) Bolster: Shitan Bolster/ Handle Material: Round-Shaped Shitan Rosewood Hardness Rockwell C scale: 62-63 / Saya Cover : Lacquere Nuri Saya Included