SKU: 83101567383

Masamoto KS 210mm Gyuto (KS3121)

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Description

Masamoto KS 210mm Gyuto (KS3121)Little introduction is needed for this highly respected gyuto from Masamoto. The KS series is Masamoto's premium Gyukuhaku ko line. All knives in the KS series are made of Shirogami #2 steel (White No. 2) and gone through the highest level of hand polishing and sharpening. Optional Saya: the optional saya is custom made by Masamoto specifically for your knife, and is not a generic Masamoto saya. Because of this, the saya is snugly fitted, and no pin

Little introduction is needed for this highly respected gyuto from Masamoto. The KS series is Masamoto's premium Gyukuhaku-ko line. All knives in the KS series are made of Shirogami #2 steel (White No. 2) and gone through the highest level of hand polishing and sharpening. 

Optional Saya: the optional saya is custom made by Masamoto specifically for your knife, and is not a generic Masamoto saya. Because of this, the saya is snugly fitted, and no pin is needed to secure the saya. 

This knife is also available in 240mm Blade Length (KS3124

Spec:

  • Origin (Made in): Sakai, Osaka Prefecture, Japan
  • Brand: Yamawaki Hamono
  • Knife Type: Gyuto
  • Blade
    • Construction: Monosteel (Stamped)
    • Grind: Double-edged Blade (50/50 Grind)
    • Steel Type: Shirogami #2 (Gyukuhaku-ko / White #2)
    • Hardness: 62 HRC
    • Hand-grinded, hand-sharpened
  • Blade Finishes:
  • Blade Length: 210mm (8.2")
  • Blade Height (at heel): 47mm
  • Spine Thickness
    • Above heel: 2.8mm
    • Middle: 2.3mm
  • Handle
    • Shape: Marushinogi (D-shaped)
    • Material: Japanese Magnolia (Ho Wood)
    • Kuchiwa: Buffalo Horn 
    • Length: 132mm
  • Overall Length: 370mm
  • Weight: 135g (4.76oz)
  • Hand chiselled mark: In Japanese Kanji "Trademark Masamoto Sohonten" (登錄 正本 総本店)
  • Optional Saya: a custom-fitted Magnolia Saya made by Masamoto (no pin needed!) with Masamoto logo.

About Masamoto Sohonten 正本 総本店

Masamoto Sohonten is a legendary brand with over 150 years of history. The name is perhaps one of the most well known and well-respected knives brands in Japan, with a well-deserved status as No.1 sushi knife maker. Born in 1845, the first generation Masamoto - Minosuke Matsuzawa - went to Osaka as an apprentice at a young age of 17. Four years later he returned to his home town in Kanto and began making honyaki chef knives. After 5 generations tirelessly pursuing the art of knife craftsmanship, Masamoto has earned its status as the premier brand for professional Japanese Kitchen knives. The Masamoto flagship store (sohonten) that opened in Tokyo in the year 1890, is still welcoming visitors at the same spot after 130 years.

Care:

Shirogami #2 (white #2) steel is one of the most popular types of high carbon steel found in Japanese kitchen knives (Wa Knives). It is not stainless, therefore you must 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: 83101567383

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4.4 ★★★★★
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Bing
Phoenix, US
★★★★★ 5
Pleased Customer!
Size: 42, Color: Red With Black Strip
Perfect fit!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2026
B
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B. Gross
New York, US
★★★★★ 4
Reasonable quality, slightly small, definitely unhemmed
Size: 42, Color: White With Black Strip, Size: 42, Color: White With Black Strip
If these pants are the right look for what you want/need, they're a reasonably good quality option. But that said, in practice these looked a little "cheesy" with the black stripe. I can't say for sure that's a result of how the product is made/how it looks, but I just couldn't see myself wearing them. That's assuming I could wear them... In terms of fit, they were slightly small in the waist for both pairs I ordered. I'm not sure what I thought they meant when I read that they were unhemmed, but for those looking for pants to take out of the box and wear... these aren't for you. The ankles are not "finished" and require hemming to make them look acceptable. (This was my fault, so I didn't count off for this)
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Reviewed in the United States on July 8, 2021
C
Verified Purchase
Chiaro
Los Angeles, US
★★★★★ 3
They stand out, and are flashy, but sizing is complicated.
Size: 34, Color: Black With White Strip, Size: 34, Color: Black With White Strip
High-quality pants and flashy. The stripe adds a lot of attention for reasons both good and bad. The materials they were made are excellent quality. Pants are thick, but not too thick, and are lightweight, guaranteeing easy movement. Comfortable - could wear these all day. I do love their appearance. They made me feel like a million bucks. :) The only problem is sizing and fit. I normally wear size 34 for waist in jeans and dress pants like these, but the 34 I got didn't fit at all - too tight. So, I ordered a 36, and it fit, but barely. When I sat down, there was too much tightness in my "masculine area". I also ordered a 38, and, well, they were just too big - practically hung off me. A 37 would probably work for me in these, but they don't offer such a size. I have to return the 34 and 38. Will keep the 36, see if I can have it altered in some way. Length was fine. Being 1.86 meters, often the length in these pants is a little on the short side. In the photo, I'm wearing size 36 and the black pair with the gold stripe, which is actually more of a flashy yellow. I liked how I looked in them, but they were a little too tight at times, the belt wasn't even necessary. It enhanced the outfit though, don't you think.
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Reviewed in the United States on July 20, 2025
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Anonymous For Now
Carnegie, US
★★★★★ 5
Good as a standard "Tuxedo" pants
Size: 42, Color: Black With Red Strip
Red Striping could be wider. These are good as a standard "Tuxedo" pants but if you are looking more fore a "Security Guard" style pants the striping needs to be wider.
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Reviewed in the United States on April 18, 2025
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Roland R
Battle Creek, US
★★★★★ 5
Runs small in the waist
Size: 34, Color: Black With Black Strip
These are good pants, but as other reviewers have noted, they tend to run small. Order one size up from the size you normally order. I'm a 34 inch waist, and I ordered the 34. They were tight, and I had to have them let out. I may order another pair, and if so, I'll order the 36. Don't be vain. Be smart.
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Reviewed in the United States on April 6, 2015

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