Yu Kurosaki "Kokusenei" Aogami Super 170mm Bunka
SKU: 68372837045

Yu Kurosaki "Kokusenei" Aogami Super 170mm Bunka

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Description

Yu Kurosaki "Kokusenei" Aogami Super 170mm BunkaMaster Kurosaki has advanced his "Senko Ei" series by introducing the "Kokusenei," meaning "Black Sparkle." This Kurouchi version retains all the qualities of the original Senko Ei but features Aogami Super steel at its core. It's an excellent choice for those who appreciate Yu Kurosaki's craftsmanship and grinding but prefer carbon steel over the original R2 SG2 steel. Spec: Origin (Made in): Echizen, Fukui Prefecture, Japan Brand: Yu Kurosaki

Master Kurosaki has advanced his "Senko-Ei" series by introducing the "Kokusenei," meaning "Black Sparkle." This Kurouchi version retains all the qualities of the original Senko-Ei but features Aogami Super steel at its core. It's an excellent choice for those who appreciate Yu Kurosaki's craftsmanship and grinding but prefer carbon steel over the original R2/SG2 steel.

 

Spec:

  • Origin (Made in): Echizen, Fukui Prefecture, Japan
  • Brand: Yu Kurosaki
  • Craftsman: Yu Kurosaki
  • Knife Type: Bunka
  • Blade
    • Construction: San Mai
    • Grind: Double-edged Blade (50/50 Grind)
    • Hagane (Core Steel): Aogami Super 
    • Jigane (Cladding): Stainless Steel
    • Hardness: 63-64 HRC
    • Hand-sharpened
  • Blade Finishes:
    • Signature Tsuchime (Hammered)
    • Kurouchi
  • Blade Length: 170mm (6.7")
  • Blade Height (at heel): 47mm
  • Spine Thickness
    • Above heel: 1.8mm
    • Middle: 1.8mm
  • Handle
    • Shape: Hachikaku (Octagonal)
    • Material: Teak
    • Kuchiwa: Black Buffalo Horn 
    • Length: 127mm
  • Overall Length: 313mm
  • Weight: 119g (4.20oz) 
  • Engraved Mark: In Japanese Kanji "Kurosaki Yu" (黒崎 優)

About Yu Kurosaki 黒崎 優

A young artisan in his forties, Yu Kurosaki has become one of leading knife makers in Japan, winning top awards and attention for his hand-forged knives especially his Tsuchime finish. Inheriting over 700 years of knife making skills from previous generations of Echizen artisans, Mr Kurosaki has focused his career on making knives that give unforgettable impressions and incredible cutting pleasures. Yu's unique Tsuchime design, as seen in his Shizuku and Fujin series, are not only aesthetically magnificent but also incredibly functional when it comes to making food less likely to stick to blades. Today, Yu's works, hand made in small batches, have become so popular overseas that his top knives like the ones featured in Burrfection Store are increasingly hard to come by.

Care:

 

Aogami Super (Blue Super) steel is considered the most superior Japanese high carbon steel for knife making. It is not stainless, therefore you must wipe your knife dry after each use, in particular the core steel not covered by the stainless cladding. Patina will develop over time, which will appear as “discoloration” on the cutting edge, but that is the nature of carbon steel - not a defect. The stainless cladding covers a large part of the blade, making maintenance easier but still preserving the cutting and sharpening pleasure of the Aogami Super core. 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.
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Exchange/Return Notes
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SKU: 68372837045

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K.K.
Port Orchard, US
★★★★★ 5
Recommend
Style: 2 x 2.0Ah
Works great BUT if you make this purchase go ahead and order handle extension because if you don't it will screw your low back up big time. Like I said works great cut great but I haven't tested the run time yet.
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Reviewed in the United States on May 23, 2026
S
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Scott C. Hart
Charlottesville, US
★★★★★ 5
Edged entire corner lot with a sidewalk on one charge of the batteries.
Style: 2 x 2.0Ah
Excellent. A bit heavier than my echo gas weed trimmer for reference. Fair balance but it is a bit of a workout. The good thing is I can edge a 10k sq ft corner lot in about 1/3 the time. On the corner, I have both sides of the sidewalk plus the curb side to do. I've owned gas edgers before also. This comes in comparable to the price I paid for one of those 20 years ago so I would also say a good if not very good value for the buck. It was not an initial edging but 1st maintenance for the year and rather overgrown. Didn't even use one full charge on the edger.
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Reviewed in the United States on February 24, 2026
K
Verified Purchase
Krisgirl
Omaha, US
★★★★★ 5
Amazing!!! Works great
Size: 9 inches
Works really well. Cit through my Saint Augustine grass like a breeze and it is super thick. Very happy with purchase. Battery has good life, charged it for a full 24hrs before use and it last a long time. They send 2 blades and the battery with charger which is a huge plus because everything else I looked at you had to purchase those separately and it was just as much as the edger. This is a great deal and worth the money. Highly recommend 👌
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Reviewed in the United States on April 18, 2026
M
Verified Purchase
mo dale
Omaha, US
★★★★★ 5
Great thing to have.
Size: 9 inches
Great thing to have. For my small yard, it is perfect for me. Yes, the battery life does not last as long as I would like be, but I would buy this again. Great power and speed.
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Reviewed in the United States on March 14, 2026
A
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Amazon Customer
Battle Creek, US
★★★★★ 4
Edging made easy
Size: 9 inches
Surprised how well this works. I was looking for no cord for long driveway. The battery takes a bit to fully charge, but lasts for the entire job. The levels for depth make edging around d flower beds or raised beds easy- not really a trench, but gives a good edge. Lightweight and easy to manage. Definitely lighter than my corded edger. The blade is sensitive and the guide to keep it steady along concrete is not great- just need to make sure you watch closely or it will spark when it hits the concrete.
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Reviewed in the United States on July 26, 2025

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