Kobocho Kurouchi 105mm (4.1 in) Aogami (Blue) #2 Double-Bevel

• Type: Kobocho
• Finish: Kurouchi
• Blade Length: 105 mm (4.1 in)
• Construction: Hon-Warikomi
• Core Edge Steel: Aogami (Blue) #2
• HRC (Rockwell Hardness): 60-61
• Handle: Walnut Octagonal
• Bevel: Double-Bevel
• Place of Origin: Tosa, Japan
  

Kobocho, Japanese for “little knife,” is shaped like a mini Santoku and is forged from Aogami #2 or blue paper #2 steel. It is highly regarded for its ability to take and hold a steep and refined edge.

Blue (Aogami) #2 (Hitachi Metals Ltd.) is made by adding Chromium and Tungsten / Wolfram to White Steel #1. This results in increased toughness and the production of hard carbide molecules, which improve edge retention. Many knife users have noted that while Blue Steel #2 is very similar to White Steel #1 in terms of edge sharpness, it has slightly superior edge retention.

Black-finish is a state in which the surface that has been blackened by quenching is sharpened only with the blade, leaving the black side unintentionally on the sides (Mine and Hira) other than the blade.

* This is handmade product, so there may be slight difference from the actual image.