A powerful, professional Japanese Deba knife for preparing large fish
This authentic Tsukiji Aritsugu Betsuuchi Deba is a traditional heavy-duty Japanese knife designed for professional fish preparation.
Its substantial 210mm single-bevel blade provides the weight, strength and control needed for breaking down large fish, removing heads and fins, cutting through fish bones and portioning poultry.
The blade is made from Blue Steel #2, a premium Japanese high-carbon steel prized by professional chefs for its exceptional sharpness, excellent edge retention and durability.
The traditional magnolia wood handle and black water buffalo horn bolster provide a comfortable, secure grip during demanding preparation work.
Its thick spine and approximately 450g weight allow the knife to cut with momentum, reducing the amount of force required when processing large fish.
»Why You'll Love This Aritsugu Betsuuchi Deba
1️⃣ Authentic Tsukiji Aritsugu
100% authentic Aritsugu knife, made in Japan.
2️⃣ Premium Blue Steel #2 (Aogami #2)
High-quality Japanese carbon steel known for exceptional sharpness, durability and long-lasting edge retention.
3️⃣ Professional Single-Bevel Blade
The traditional right-handed single-bevel edge provides excellent control and produces precise, clean cuts.
4️⃣ Heavy-Duty 210mm Blade
The thick, weighty blade is designed for breaking down large fish, cutting fish bones and handling demanding professional kitchen tasks.
5️⃣ HRC 62± Hardness
Professional-grade hardness for outstanding sharpness, durability and edge performance.
6️⃣ FREE Personalized Name Engraving
Have your name hand-engraved on the blade in English, Kanji, or Katakana at no additional charge.
7️⃣ FREE Sabitoru Rust Eraser
A Japanese rust eraser is included to help you care for your carbon-steel knife.
8️⃣ FREE Worldwide Shipping
Shipped directly from Japan with tracking and insurance.
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»Who Is This Knife For?
This Betsuuchi Deba is especially recommended for:
✓ Professional chefs
✓ Sushi and Japanese cuisine chefs
✓ Fishmongers and seafood professionals
✓ Breaking down large fish
✓ Removing fish heads and fins
✓ Cutting through fish bones and cartilage✓ Filleting and portioning fish
✓ Preparing poultry
✓ Japanese knife collectors and enthusiasts
✓ Premium gifts for professional chefs and serious cooks
Please note: Although this Deba is designed to handle fish bones and cartilage, do not use it to cut frozen food, extremely hard bones or other hard materials, as this may chip or damage the blade.
Blue Steel #2 is a high-carbon steel and is not stainless. Wash and dry the knife immediately after use.
Applying a small amount of food-safe knife oil before long-term storage can help prevent rust.
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»Why Choose a 210mm Betsuuchi Deba?
A 210mm Betsuuchi Deba is a substantial professional Japanese knife designed for breaking down and portioning medium to large fish.
◆Powerful, Heavy-Duty Blade
The thick spine and approximately 450g weight give the knife excellent cutting power. The weight of the blade helps you work efficiently without relying entirely on physical force.
◆Excellent for Large Fish
The 210mm blade provides the length, strength and stability needed to process larger fish, including removing heads, separating joints and cutting through fish bones.
◆Professional Single-Bevel Edge
The traditional right-handed single-bevel construction provides excellent control and helps produce clean cuts without unnecessarily tearing the flesh.
◆Premium Blue Steel #2 Blade
Blue Steel #2 offers excellent sharpness and superior edge retention, making it ideal for professional chefs who regularly process large quantities of fish.
◆Betsuuchi Professional Grade
“Betsuuchi” represents a superior-grade line crafted for demanding professional use, combining traditional Japanese craftsmanship with excellent cutting performance.
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✨FREE Personalized Name Engraving
Make your Aritsugu knife truly yours.
Our artisans can hand-engrave your name on the blade FREE of charge.
Available in:
✓ English
✓ Kanji
✓ Katakana
A personalized Aritsugu knife also makes an unforgettable gift for a chef, culinary professional, fishmonger or Japanese knife enthusiast.
Enter your desired name when ordering.
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✨FREE Sabitoru Rust Eraser
Because Blue Steel #2 is a traditional carbon steel, proper maintenance is important.
This knife includes a FREE Sabitoru Rust Eraser to help remove light surface rust and maintain your knife.
▶️ A quick video guide on how to use your free rust eraser.
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⭐⭐⭐⭐⭐ Customer Review:
Of course! I am a big fan of Aritsugu and I am glad you offer them here! Also, this purchase is for my father and would like to have it engraved with his name “Wing”. Thank you so much! — A.N., USA
▶️ "Read Customer Reviews"
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Knife Specifications
| Brand: | Tsukiji Aritsugu (made in Japan) All our items are 100% authentic. |
|---|---|
| Included: | Aritsugu Betsuuchi Deba Knife Paper Box FREE Sabitoru Rust Eraser Care Instructions |
| Optional: | Wooden Saya Case (Sheath) |
| Knife type: | Betsuuchi Deba / Japanese Fish Butchery Knife |
| Use: | Fish and poultry |
| Edge: | Single-edged (Right-handed) |
| Blade Steel: | Blue Steel #2 / Aogami #2 |
| Bolster: | Black Water Buffalo Horn |
| Handle material: | Magnolia Wood |
| Overall Length: | Approx. 370 mm (14.56") |
| Blade length: | Approx. 210 mm (8.26") |
| Blade width: | Approx. 60 mm (2.36") |
| Spine Thickness: | Approx. 8 mm (0.31") |
| Weight: | Approx. 450 g (15.87 oz) |
| Hardness: | HRC 62± |
*Because each knife is individually handcrafted, slight variations in appearance, color, dimensions, weight and finish may occur.
*A wooden Saya case is available as an option. Please select your preferred option when ordering.
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»How to Care for Your Aritsugu Betsuuchi Deba Knife
Blue Steel #2 is a premium Japanese high-carbon steel that offers excellent sharpness and edge retention but requires proper care.
✓ Hand wash immediately after use
✓ Wipe the blade completely dry
✓ Never put the knife in a dishwasher
✓ Do not leave the blade wet
✓ Do not cut frozen food or extremely hard bones
✓ Avoid twisting or applying sideways pressure to the blade
✓ For long-term storage, apply a thin layer of knife-safe oil, such as camellia oil
✓ Store the knife in a dry environment
With proper use and care, your Aritsugu Betsuuchi Deba can provide many years of outstanding professional cutting performance.
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»Authentic Aritsugu – Made in Japan
Every Aritsugu knife we sell is 100% authentic.
Aritsugu has preserved the tradition of Japanese blade craftsmanship since 1560. Its knives are valued by professional chefs for their outstanding sharpness, quality and traditional construction.
We are a legally registered business in Japan and ship directly from Japan to customers around the world.
Your knife is carefully packed for international shipping and sent with tracking and insurance.
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»Frequently Asked Questions
Is this an authentic Aritsugu knife?
Yes. We sell 100% authentic Tsukiji Aritsugu knives made in Japan.
What is a Betsuuchi Deba?
A Betsuuchi Deba is a superior-grade traditional Japanese fish butchery knife. Its thick, heavy blade is designed for breaking down fish, removing heads and fins, cutting fish bones and portioning fish or poultry.
What is Blue Steel #2?
Blue Steel #2, also known as Aogami #2, is a premium Japanese high-carbon steel. It is valued for its exceptional sharpness, durability and excellent edge retention.
Will Blue Steel #2 rust?
Yes. Blue Steel #2 is carbon steel rather than stainless steel, so it can rust if left wet. Always wash and thoroughly dry the knife immediately after use.
What size of fish is this knife suitable for?
The substantial 210mm blade is particularly suitable for preparing medium to large fish in professional kitchens, sushi restaurants and fish markets.
Can this knife cut fish bones?
Yes. The thick and heavy Deba blade is designed to cut fish bones and cartilage. However, it should not be used on frozen food, extremely hard bones or other hard materials.
Can I use it to cut frozen fish?
No. Do not use this knife to cut frozen fish or other frozen food, as this may chip or damage the blade.
Is this knife suitable for professional chefs?
Yes. Its 210mm blade, approximately 8mm-thick spine, traditional single-bevel construction, Blue Steel #2 blade and HRC 62± hardness make it particularly suitable for professional chefs and experienced users.
Is this knife right-handed or left-handed?
This product has a traditional right-handed single-bevel edge.
Is name engraving free?
Yes. Personalized name engraving is available FREE of charge.
Can you engrave English names?
Yes. We can engrave names in English, Kanji, or Katakana.
Does it include a Saya?
A wooden Saya case is available as an option. Please select whether you would like to include one when placing your order.
Does the knife arrive sharpened?
Professional sharpening by Aritsugu is available as an option. Please select your preferred sharpening option when ordering.
Do you ship internationally?
Yes. We offer FREE worldwide shipping from Japan with tracking and insurance.
Are import duties included?
Import duties, taxes and customs charges are not included and, when applicable, are the buyer’s responsibility.
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»Own a Professional Japanese Fish Butchery Knife
The Aritsugu Betsuuchi Deba 210mm Blue Steel #2 combines traditional Japanese craftsmanship, powerful fish-cutting performance and exceptional edge retention.
Its substantial weight, thick spine and professional single-bevel blade make it an excellent choice for chefs, fishmongers and serious cooks who regularly prepare medium to large fish.
Designed for professionals who appreciate precision, strength and the tradition behind an authentic Japanese blade.
Order your authentic Aritsugu Betsuuchi Deba today and add your FREE personalized engraving.
