SKU: 22151572700

Nigara "Onikoroshi (Troll Killer)" Aogami #2 Damascus 300mm Kiritsuke Yanagiba

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Description

Nigara "Onikoroshi (Troll Killer)" Aogami #2 Damascus 300mm Kiritsuke YanagibaWith more than 100 layers of Damascus as well as the blackened blade, the "Onikoroshi" demonstrates a mysterious yet charming appearance. Heat treated to 64 HRC with Aogami #2 (Blue #2), the painstaking efforts needed to forge a Kiritsuke Yanagiba is comparable to a knife in Honyanki construction. Spec: Origin (Made in): Hirosaki, Aomori Prefecture, Japan Brand: Nigara Hamono Craftsman: Tsuyoshi Yoshizawa ( ) Knife Type: Kiritsuke Yanagiba Blade

With more than 100 layers of Damascus as well as the blackened blade, the "Onikoroshi" demonstrates a mysterious yet charming appearance. Heat treated to 64 HRC with Aogami #2 (Blue #2), the painstaking efforts needed to forge a Kiritsuke Yanagiba is comparable to a knife in Honyanki construction.

Spec:

  • Origin (Made in): Hirosaki, Aomori Prefecture, Japan
  • Brand: Nigara Hamono
  • Craftsman: Tsuyoshi Yoshizawa (吉澤 剛)
  • Knife Type: Kiritsuke Yanagiba
  • Blade
    • Construction: Awase (Kasumi)
    • Grind: Single Bevel (Right-handed)
    • Hagane (Core Steel): Aogami #2 (Blue #2)
    • Jigane (Cladding): Soft Iron
    • Hardness: 64 HRC
    • Hand-forged, hand-ground, hand-sharpened
  • Blade Finishes:
    • Damascus ("Anmon" Pattern)
    • Kurosome (Black Etched)
  • Blade Length: 300mm (11.8")
  • Blade Height (at heel): 40mm
  • Spine Thickness
    • Above heel: 4.7mm
    • Middle: 3.9mm
  • Handle
    • Premium Custom Handle
    • Shape: Hachikaku (Octagonal)
    • Material: Ebony
    • Kuchiwa / Tsukajiri: Marble Buffalo Horn
    • Ginmaki: Nickel Copper (x2)
    • Length: 144mm
  • Overall Length: 452mm
  • Weight: 307g (10.83oz)
  • Engraved Mark: In Japanese Kanji "Nigara Made" (二唐作)

About Nigara Hamono 二唐刃物

With 350 years of history, starting from making swords for Tsugaru clan in the early Edo period, Nigara Hamono has passed down knowhow and skills for eight generations. Its 5th generation blacksmith Kunitoshi Nigara was a legendary sword maker, earning a long list of accolades, honorary titles and knighthood. The current (8th) generation blacksmith — Tsuyoshi Yoshizawa is supported by his father Toshiju Yoshizawa who has keen interests in art and music. Nigara’s famous Anmon design is the result of Toshiju’s love for Andy Warhol’s artworks. The family business’ expansion into construction steelworks has given Nigara unmatched access to in-house knowhow when it comes to advanced finishing. All these set Nigara apart as one of the most special knife makers in Japan.

Care:

Aogami #2 (Blue #2) steel is a premium Japanese high carbon steel for knife making. Despite some corrosion resistant quality (for a carbon steel), it is not stainless, therefore you should wipe your knife dry after each use. Patina will develop over time. Rust may develop if left in prolonged contact with water or acidic food. Use a rust eraser to clean if rusts develop. Avoid cutting into bones, frozen foods, hard fruit pits.

Cutting Surface:

Recommended cutting surface: wood, rubberized boards and high-end composites, and quality plastics such as polyethene make acceptable cutting surfaces, and will help protect and prolong knife’s edge. AVOID glass, metal, countertops, and other rigid, non-forgiving surfaces.

Sharpening:

We recommend sharpening all quality Japanese knives on whetstones, as we believe they yield the best results for your knives.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 22151572700

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Alan
Boise, US
★★★★★ 5
Works great and is affordable!
Color: Black
Works great! The magnet it comes with is quite weak. But the tool itself works great.
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Reviewed in the United States on May 8, 2026
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Jemagu
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★★★★★ 5
No gimmicks, just a solid WDT tool
Color: Metal Black
This is the second Aieve product I’ve purchased, after a very good experience with their XL espresso cooling ball. This WDT tool isn’t flashy, it doesn’t look like a praying mantis or deploy like a switchblade; but it does exactly what it’s supposed to do. The tool sits in a nicely weighted base that protects the needles from bending, which is a big improvement over the magnetic “floating” styles. The base has enough weight to stay put, and it’s easy to remove and return the tool without it tipping or sliding around. The base itself fits nicely in my tamping station. It also comes with replacement needles, which are simple to swap out when needed. If you’ve been going down the rabbit hole comparing every WDT tool out there, this is a straightforward, well-designed option at a very reasonable price.
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Reviewed in the United States on March 23, 2026
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Living Wage Advocate
San Leandro, US
★★★★★ 4
Solid 4mm WDT tool with a solid stand and a magnet option for some machines.
Color: Black
Solid WDT tool with good hand feel and convenient counter top stand. 4mm needles and it works fine. 10 of these 4mm needles adequately stir the espresso in the portafilter. No real complaints about build quality. I attached the included magnet. There are many people who have identified that the magnet is not strong. This is true but it depends on the materials on your espresso machine or grinder. On stainless steel units (unpainted or thinly painted) it has good adhesion. On units that might have used thick paint ( which shouldn't be compromised) it may not stick well. So I took a star off--I do have a stainless steel Espresso machine and it sticks fine. It also stuck ok to my refrigerator , microwave and airfryer. If your espresso station is near other appliances---well there you go--also it does show that it "can stick" to fairly common other magnetic materials. My refrigerator is coated in white . I was going to simply buy acupuncture needles, a wine cork and make one of these but add those costs together and heck $9 for this unit with a stand was a great deal.
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Reviewed in the United States on January 13, 2026
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Carolyn
Draper, US
★★★★★ 5
Great little tool
Color: Black
It’s a cheap tool but can actually make an impact on the coffee. Been using for a few months and still works great.
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Reviewed in the United States on April 20, 2026
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MatthewT
Battle Creek, US
★★★★★ 5
Great purchase!
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I’ve been using the Aieve WDT Tool for a bit now, and overall I really like it. There was definitely a learning curve at first. It took me a little time to figure out how to use it in a way that actually improved my puck prep instead of just stirring the grounds around. Once I slowed down and found a consistent motion that worked for me, I really started to see the difference in distribution. Build-wise, I know some people have mentioned the stand falling off. Personally, I haven’t had any real issues with it unless I’m the one who bumps it and sends it flying. If it’s staying put and I’m not being clumsy, it’s fine. I’m using the magnet side to stick it right to my Breville, which has been super convenient. It keeps everything within reach and makes my workflow smoother. For the price, it’s been a solid addition to my espresso setup, especially now that I’m getting the hang of it.
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Reviewed in the United States on February 21, 2026

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