K18 Itamae Bunka Bocho

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The K18 Itamae Bunka Bocho is part of Spyderco's Murray Carter Collection of kitchen knives.

Appearance in catalogs


Murray Carter

History, mentionings etc. from the forums

Information from the Spyderco catalog on the web

K18 Itamae Bunka Bocho

An all-purpose knife suitable for preparing meat, vegetables, and fish, the Bunka Bocho literally means "cultural knife" because of its role in making traditional Japanese cuisine in the home. Closely related to the Santoku ("three virtues") knife, the Bunka Bocho has a more acute and utilitarian point.

Literally meaning "in front of the cutting board," Itamae is an extremely prestigious title reserved for highly skilled sushi chefs. Consistent with that elite status, the Murray Carter Collection's Itamae Series -- the highest tier in the Collection -- proudly features premium materials and uncompromising craftsmanship.

The blades of Itamae Series knives are expertly crafted from laminated steel consisting of an Aogami Super Blue core clad between layers of SUS410 stainless steel. The classic three-layer construction allows the outer layers to protect and support the ultra-hard carbon-steel center layer that forms the blade's edge. Ground exceptionally thin and straight for unparalleled cutting performance, the blades also feature Murray Carter's signature "Carter Elbow" -- a distinctive taper from the spine to the point that reinforces the blade's tip.

The elite blades of the Itamae Series are paired with traditional "wa-style"(octagonal) handles made from stunning burl G-10 and highlighted with black G-10 ferrules. Created for those who demand the very best, the Itamae series faithfully captures the spirit of Murray Carter's coveted handmade kitchen knives and sets a new standard in high-performance kitchen cutlery.[1]


The K18 is originally made in Seki City, Japan, and:

  • features a modified Drop Point Blade shape
  • features a polished G-10 handle
  • as one of few exceptions in Spyderco's line-up, it does not feature Spyderco's trademark round hole
SKU Handle Edge Steel From/To MSRP Note Number made Grind Collectors club
K18GBNBK Black, White and Brown G-10 PE Super Blue/SUS410 2020 - $395.00 (2021) Part of Spyderco's Murray Carter Collection N/A Full Flat

Most collectible variation

The original K18 Itamae Bunka Bocho, complete with original box and papers in mint condition is likely to be the most collectible version.

Questions regarding collecting the K18

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Technical information

Measurements (mm and grams) of the K18 Itamae Bunka Bocho:

Variation Length overall Length blade Length edge Blade thickness Weight
K18GBNBK 319mm 195mm 183mm 1.9mm 173g

Measurements (inches and ounces) of the K18 Itamae Bunka Bocho:

Variation Length overall Length blade Length edge Blade thickness Weight
K18GBNBK 12.57" 7.69" 7.20" 0.075" 6.1oz


  1. The K18 Itamae Bunka Bocho in Spyderco's online catalog


The K18 Itamae Bunka Bocho, designed by Murray Carter