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Masamoto KS Series White Steel No.2 Wa Gyuto (210mm to 300mm, 4 sizes)

Availability: Normally ships within 1 to 2 days

The KS Series is Masamoto’s range of high-grade Shiro-ko #2 (White Steel No.2) Japanese traditional-style knife. Masamoto KS Series Wa Gyuto is completely hand sharpened, polished and finished by especially skilled and experienced craftsmen, which results in extra edge sharpness and a more refined level of finish.

Masamoto KS Series knife uses a blade core of Hitachi White Steel No.2 (HRc. 62-63). White Steel No.2 is very pure and is capable of achieving a high hardness level without being overly brittle, so it can be used to create very sharp edges with good edge retention that are also easy to sharpen. It is perfect for professional users who like to keep their knives extra sharp.

Each knife is fitted with a traditional Japanese ‘D-shaped’ magnolia wood handle with a water buffalo horn ferrule / collar and also includes a matching magnolia wood Saya (Sheath) for safekeeping.

The Gyuto is the Japanese version of the classic Western Chef’s knife. It can be used with a variety of different cutting techniques to achieve a wide range of kitchen tasks and is suitable for cutting the vast majority of meats, fish, vegetables and fruits. The Gyuto is true multi-purpose knife.

Knife Model: Masamoto KS Series Wa Gyuto

Blade Material:  White Steel No.2

Rockwell Hardness (HRc): 62 to 63

Blade Grind and Edge Shape: Double Bevel Edge 50/50

Handle Material: D Shaped Magnolia Wooden Handle with Water Buffalo Horn Ferrule

Saya Included: Yes.


Wa Gyuto 210mm (8.2")
Cutting edge length: 220mm
Total Length: 370mm
Blade Thickness: 2.6mm
Blade Width: 47mm
Handle Length: 132mm
Total Weight: 135g
Wa Gyuto 240mm (9.4")
Cutting edge length: 255mm
Total Length: 405mm
Blade Thickness: 2.8mm
Blade Width: 49mm
Handle Length: 138mm
Total Weight: 176g
Wa Gyuto 270mm (10.6")
Cutting edge length: 285mm
Total Length: 440mm
Blade Thickness: 3mm
Blade Width: 53mm
Handle Length: 142mm
Total Weight: 206g
Wa Gyuto 300mm (11.8")
Total Length: 480mm
Blade Thickness: 3mm
Blade Width: 56mm
Total Weight: 240g



This knife comes with 50/50 double bevel edge geometry for both right and left handed use.

For your information, Japanese Kitchen knives are generally designed for right hand use with a slightly thicker and rounded grinding on the right side blade and a less rounded (almost straight flat) grinding on the left side blade. However, both right and left hander can use the knives that have double bevel edge sharpened 50/50 without problems.

We believe the quality and cutting performance of Japanese knives are the best in the world, and hope you enjoy the fine craftsmanship and itssharp edge of your new knife. With proper cares, every Japanese knife should be your special cooking partner for a long time.



This is the Carbon steel blade kitchen knife that can get rust and discolor easily, and requires extra cares and attentions to prevent rust.

  • Please do not put the knife in the dishwasher machine for cleaning.
  • Please do not leave the knife in water or wet condition for a long time.
  • After using, please hand wash the blade, bolster and handle thoroughly, and wipe it clean and dry with soft clothes. Please apply Tsubaki oil on the blade and keep it in a dry place.
  • This is an extremely sharp knife. Please use special cares in using and storing it.
  • Unlike German made knives, Japanese knife blades are ground to thin cutting edge for sharper cutting and easier re-sharpening. Please protect the edge from hitting hard materials to avoid chipping or cracking.
  • Please do not use it to cut bone or frozen foods, any hard shell foods such as lobster and crab.
  • We recommend using Japanese whetstones to re-sharpen the knife, when it gets dull. 
Customer Reviews
5.0 Based on 126 Reviews
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Jason S.
United States United States
I recommend this product
I get the hype!

Life changing knife! I was struggling to decide between a few different knives, so I emailed Koki to help me choose. He was extremely helpful and directed me towards the KS. I couldn’t be happier! I will be getting the 240mm eventually...Due to the balance point of this knife, I pinch-grip it farther up the blade, so this feels shorter compared to a 210mm western handle knife. It feels like an extension of my hand - total control! The 240mm would not feel like a large clumsy knife in any way. I already had several $300+ western style knives, and some $100+ wa handle knives, but this is the only knife being used in my kitchen. When I always read about the KS online, everyone raved about the profile, the profile, the profile...WOW - the profile! I have never utilized the tip of a knife as much as this one. Pairing knife stays in the drawer. The one negative that I always read about was the quality of the handle on newer KS knives. It definitely feels unfinished, but it’s part of what keeps it so light. I have tasked my wife with putting some sort of finish on the handle so it is more waterproof, and she is excited about the fun project, so I’m not too concerned with that. Buy this knife!

JapaneseChefsKnife.Com Masamoto KS Series White Steel No.2 Wa Gyuto (210mm to 300mm, 4 sizes) Review
United States United States
I recommend this product
Masamoto KS Series White Steel No.2 Wa Gyuto

This is a my second Masamoto KS and the third is coming. Love the quality of the knife. The store out of stock of 240mm so I bought 210mm couple months ago. This time I ordered 270mm and Masamoto KS Series Sweden Stainless Steel SW-Wa Gyuto 240mm. Remember if you don't know how to sharpen the knife with whetstone or take care the Japanese knife with Carbon steel. Just buy the VG10 or any stainless steel.

United States United States
I recommend this product
Razor Sharp

Very high quality finished knife, Very satisfied. Fast shipping.

Chun W.
Australia Australia
I recommend this product
Best Purchase Experience

Sharpest knife, fast delivery, highly recommend others to purchase one immediately!

Jinshik C.
Australia Australia
I recommend this product
Masamoto KS 270mm Wa Gyuto

Masamoto KS 270mm is perfect knife for professional chef. I really enjoy the job with this knife. it is very sharp and last long, easy to sharpening as well. also shipment service was very good. highly recommended!! :-)

JapaneseChefsKnife.Com Masamoto KS Series White Steel No.2 Wa Gyuto (210mm to 300mm, 4 sizes) Review
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