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Kagayaki


JCK Original "Kagayaki CarboNext Carbon Master 5 Star Chef Knife Set" 4Pcs Knife Set "KC-1ES Petty125mm, KC-3ES Santoku180mm, KC-5ES Gyuto 210mm, KC-9ES Sujihiki 270mm (with Black Lacquered Sayas & Tsubaki Oil)

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For the 2026 holiday season, we have selected four knives from our well-loved Kagayaki CarboNext series, bringing together sharpness, edge retention, ease of sharpening and practical craftsmanship. A rewarding addition to your own kitchen, or a thoughtful gift for someone who takes pleasure in cooking and caring for good knives.

JCK Original "KAGAYAKI CarboNext Carbon Master 5 Star Chef Set”

4-Piece CarboNext Knife Set with Black Lacquered Wooden Sayas & Tsubaki Oil
KC-1ES Petty 125mm (4.9 inch)
KC-3ES Santoku 180mm (7.1 inch)
KC-5ES Gyuto 210mm (8.3 inch)
KC-9ES Sujihiki 270mm (10.6 inch)

From the first small ingredients to the final slices of a roast, this set brings together four useful blade shapes. The Petty takes care of detailed preparation, the Santoku offers a compact blade for daily chopping, the Gyuto provides extra reach for general preparation, and the long Sujihiki handles the slicing of boneless meat and fish. Each knife has its own role, with the familiar feel of the same CarboNext series throughout.

Carbon Steel Sharpness. Edge Retention. Ease of re-sharpening.

The CarboNext series has become one of JCK’s best-selling knife series because of what it offers in the kitchen: a keen edge, good edge retention, a responsive feel on the sharpening stone and careful fit and finish. We recommend these knives for their balance of qualities, rather than for one feature alone.

CarboNext is not stainless steel (it is sometimes called "Semi Stainless Steel" or "Semi Carbon Steel") and still requires attentive care. It offers improved rust resistance compared with ordinary carbon steel, but the blades can still discolor and rust if left wet or salty. For cooks willing to wash and dry their knives promptly, it offers a practical way to enjoy the cutting and sharpening qualities associated with carbon steel.

Each blade is made from solid, one-piece CarboNext high-carbon tool steel, hardened to HRC 59–61. The carefully ground blades and gradual taper support smooth cutting and good balance. When the edge eventually needs attention, the steel’s ease of sharpening makes restoring a keen edge part of the satisfaction of owning these knives.

The Work of the Kagayaki Craftsmen

Made in Seki City, these knives reflect the knowledge and care of the Kagayaki craftsmen with whom we have worked for many years. Their quality lies in the details that matter in use: the blade geometry, hand sharpening, careful fit and finish, and the balance between blade and handle.

Full-tang construction, black Pakka wood handles and stainless steel bolsters give the knives a straightforward, practical design. We appreciate their comfortable handles, solid construction and simple, practical design.

ES: Extra Sharpness

All four knives in this set are ES (Extra Sharpness) versions. Both the Regular and ES versions are hand sharpened by experienced craftsmen. The ES version is sharpened with a wider bevel on the right side of the blade, creating a thinner, sharper cutting edge.

Four Knives for Preparation, Chopping and Slicing

KC-1ES Petty 125mm (4.9 inch) US$100
A compact, nimble knife for peeling, trimming and slicing fruit and vegetables, preparing garnishes and other detailed tasks. Its short, narrow blade is easy to control when precision matters.

KC-3ES Santoku 180mm (7.1 inch) US$140
A versatile everyday knife for vegetables, boneless meat and fish. The tall blade and compact length make it a useful choice for routine chopping and slicing, especially when you prefer a shorter main kitchen knife.

KC-5ES Gyuto 210mm (8.3 inch) US$145
A versatile chef’s knife for a wide range of preparation. Its longer blade offers more reach than the Santoku, while the pointed tip is useful for detailed work. A dependable choice for cutting vegetables, fruit, boneless meat and fish.

KC-9ES Sujihiki 270mm (10.6 inch) US$200
A long, narrow slicing knife for boneless meat and fish, including roasts and larger portions. Its length allows long drawing cuts, helping you produce clean slices with fewer strokes. It adds a dedicated slicing tool to the shorter preparation knives.

Total individual price, including all four knives, four black lacquered wooden sayas and Tsubaki oil: US$728.

Holiday Special Price: US$570

Black Lacquered Sayas and Tsubaki Oil

This set includes a black lacquered wooden saya for each of the four knives, together with Tsubaki oil for blade care. The sayas cover the edges when the knives are not in use, while the oil supports the regular care that carbon steel needs. Always clean and dry each blade thoroughly before oiling and storing it in its saya.

A JCK Selection for Serious Chefs Who Value Performance

We chose the name “Carbon Master 5 Star Chef Set” to express our appreciation of the CarboNext series and the range of work these four knives can handle together. 

For serious chefs who value sharpness, edge retention and the ability to maintain their own knives, this is a practical set with much to enjoy. Whether you are exploring carbon steel for the first time or already appreciate its feel, we hope these four knives will become your cooking partners for many years.

Series: JCK Original "Kagayaki CarboNext Carbon Master 5 Star Chef Knife Set" 4Pcs Knife Set 
Blade material: Solid CarboNext high-carbon tool steel (mono-steel construction)
Rockwell hardness: HRC 59–61
Version: ES (Extra Sharpness), hand sharpened
Edge: Double bevel, 70/30, for right-handed use
Construction: Full tang
Handles: Black Pakka wood with stainless steel bolsters
Included: Four knives, one black lacquered wooden saya for each knife, and Tsubaki oil

KC-1ES Petty 125mm (4.9 inch)
Cutting edge length: 125mm (4.92 inch)
Total length: 230mm (9.06 inch)
Blade thickness: 1.8mm (0.07 inch)
Blade width: 26mm (1.02 inch)
Handle length: 100mm (3.94 inch)
Total weight: 71g (2.50 oz)

KC-3ES Santoku 180mm (7.1 inch)
Cutting edge length: 180mm (7.09 inch)
Total length: 300mm (11.81 inch)
Blade thickness: 2.2mm (0.09 inch)
Blade width: 46mm (1.81 inch)
Handle length: 113mm (4.45 inch)
Total weight: 166g (5.86 oz)

KC-5ES Gyuto 210mm (8.3 inch)
Cutting edge length: 210mm (8.27 inch)
Total length: 330mm (12.99 inch)
Blade thickness: 2.2mm (0.09 inch)
Blade width: 43mm (1.69 inch)
Handle length: 113mm (4.45 inch)
Total weight: 159g (5.61 oz)

KC-9ES Sujihiki 270mm (10.6 inch)
Cutting edge length: 270mm (10.63 inch)
Total length: 395mm (15.55 inch)
Blade thickness: 2.2mm (0.09 inch)
Blade width: 37mm (1.46 inch)
Handle length: 118mm (4.65 inch)
Total weight: 185g (6.53 oz)

This set contains right-handed knives with 70/30 double-bevel edges. It is not a left-handed set. Although some CarboNext models are offered individually with left-handed sharpening, the KC-9 Sujihiki is not available in a left-handed version.

CarboNext has better rust resistance than ordinary carbon steel, but it is not stainless. Discoloration can develop with use, and rust can form if the knives are not cared for properly. Do not leave the blades wet, salty or soaking in water.

After use, hand wash the blade, bolster and handle, rinse thoroughly with clean warm water and dry with a soft cloth. Pay particular attention to moisture around the bolster and where the tang meets the handle. Apply a thin coating of Tsubaki oil to the clean, dry blade for storage, and keep the knife in a dry place. Never put a wet knife into its saya.

Do not put these knives in a dishwasher. Do not cut bones, frozen food or hard shells, and avoid twisting or levering with the thin edges. Use Japanese waterstones to restore the edge when sharpening is needed.

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JCK Original Kagayaki Brand Concept

We believe knives that claim to be "best-quality" and "practical" must offer great cutting performance, great edge retention and adequate strength, whilst also being easy to maintain and sharpen. They should also be functional, be beautiful and be well made, with good fit and finish.

All of these elements are important to serious users and professionals, who demand and need highly practical, professional-quality knives. JCK Original Kagayaki knives were specifically developed to meet these requirements. 

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Kagayaki Craftsmanship

JCK Original Kagayaki knives are handcrafted by a team of special craftsman, using traditional handcrafting methods that have been handed down by many generations of experienced, skillful craftsmen in Seki City, the Japanese knife making capital that has been known as "The City of Blades" since the Muromachi era (1338-1573). Motivated by their passion and true craftsman’s spirit, they are determined and proud to carry on the Seki tradition of producing high-quality knives.

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The 'Essential Ingredients' of Best-Quality Knives: 水砥 (Mizu-to) "Whetstone Grinding and Sharpening"

To ensure an optimum balance of high cutting performance, edge retention and strength, the blade is ground to have a thin, convex cross section and a fine edge. 

The blades are manually ground on a large wet grindstone; a process that requires the sensitive touch and skill of an experienced craftsman. By rapidly pivoting his hands up and down while grinding, the craftsman creates a slightly convex blade with a thin edge.  

It takes years of experience, dedication, passion and spirit to grind and sharpen top-quality, practical knife blades. 

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The 'Essential Ingredients' of Best-Quality Knives: 歪取り (Hizumi-Tori) "Blade Straightening"

After the heat treatment, grinding and sharpening processes, the Master Craftsman pays extra attention to straightening the blades. This hammering process might seem simple, but it requires an experienced craftsperson with sharp senses.

Blade straightening aids efficiency and precision during the next manufacturing processes, so it is very important. This manual work is time-consuming, delicate and difficult, but it is essential for the production of top-quality, practical knives.

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Kagayaki Craftsman’s Story: The Inspiration for CarboNext Knives

Question: Why did the Kagayaki Craftsman Team develop the CarboNext Knife Series?

From the customer’s viewpoint, Carbon steel knives can offer great sharpness, edge retention and ease of resharpening. However, Carbon steel knives can also discolor and rust easily, so they require regular care and maintenance.

From the craftsman’s viewpoint,  Carbon steel materials are difficult to handle during the manufacturing process and require additional care and maintenance to be kept in good condition.

The Kagayaki Craftsman Team has always sought to make the most practical and efficient knives, which meet the needs of professionals. CarboNext steel was selected to meet these requirements and considerations. CarboNext steel knives provide the same high levels of sharpness, edge retention and ease of resharpening that common Carbon steel knives provide, however, CarboNext knives offer better rust resistance and are easier to maintain.

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Kagayaki CarboNext Carbon Master 5 Star Chef Knife Set