Completely hand-made by Yukihiro-san with a durable shirogami / white #1 core clad in soft-iron with a kurouchi finish, the ko-bocho is a wonderfully versatile small knife with a lot of cutting power.
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Product details
- Blade Length: 123mm (Measurement of the cutting edge)
- Total Length: 240mm (Blade + Handle)
- Blade Thickness: 2.25mm (Measured level with heel)
- Blade Height: 37.5mm (Heel to spine)
- Total Weight: 73 grams
- Core Steel: White #1
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This knife is made from a reactive carbon steel which is not stainless and therefore has some special care instructions and properties.
Read the carbon steel care guide - Cladding Steel: Soft Iron
- Hardness: 62-63 (HRC)
- Handle Style: Japanese
- Handle Material: Rosewood with plastic ferrule
- Left or Right handed: Either (Double Bevel)
Product SKU: 11301
Our aim is to measure and photograph all our products as accurately as possible but due to the handmade nature of many items, please be aware that there may be some variance in the measurements and that things such as blade and knife handle patterns can vary and presentation boxes may differ from those shown but we will always endeavour to provide the most accurate measurements, photos and descriptions of our products.
Some measurements such as HRC are provided by the manufacturer and should therefore be used as a guide.
Protection & care for this knife

We recommend a petty sized blade guard to protect this knife if you're not storing it on a magnetic rack or block.
Blacksmith Profile
Yukihiro Sakai
Yukihiro Sakai is now an independent blacksmith carrying on the traditional style of forge welding knives in-house having spent his apprenticeship learning his craft under Nishida. He represents one of the next generation of blacksmiths who still enjoy working in a traditional style and making everything in-house.