ZWILLING TWIN 1731 7-inch, fine edge Santoku Knife

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ZWILLING TWIN 1731 7-inch Santoku Knife is rated 5.0 out of 5 by 20.
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TWIN 1731 is designed by the internationally acclaimed designer Matteo Thun. Years of work culminated in the ZWILLING wedge geometry that improves comfort and optimizes cutting technique. This innovative curved bolster is meant to be an extension of the hand, supporting the professional grip with thumb and index finger on the bladeDeveloped for bearings in aerospace engineering, the highperformance Cronidur 30 steel boasts impressive toughness and corrosion resistance that is 100 times higher than standard steel. Combined with ZWILLING's signature ice-hardening technique, this FRIODUR blade is exceptionally sharp and durable.Each knife is precision-forged with ZWILLING's SIGMAFORGE process, resulting in a remarkably sturdy, balanced and flexible blade. With an incredibly sharp, laser-controlled edge, the knives are honed and hand-finished by the most skilled artisans.

  • SIGMAFORGE knife is forged from a single piece of solid Cronidur 30 high-performance NO STAINsteel
  • Ice-hardened FRIODUR blade starts sharper, stays sharper longer, and has superior resilience
  • Precision-honed blade and laser-controlled edge ensures ideal cutting angle for sharpness and durability
  • Curved bolster encourages cutting with improved precision, safety and comfort
  • Full-edge utility: whole length of the blade can be used for cutting and chopping and the edge can be sharpened from bolster to tip
  • Untreated, oiled Ebony wood handle is bonded to the bolster and tang with seamless accuracy
  • 60 Rockwell Hardness = exceptional edge retention, Edge angle 10 degrees per side
  • Manufactured in Germany


  • Item no. 31867-183
  • Color: brown
  • Country of origin: Germany
  • Substance: cronidur 30
  • Type of handle: concealed tang
  • Type of edge: fine edge
  • Edge finishing: Razor edge
  • Manufacturing method: forged
  • Number of parts: 1
  • Blade hardness (HRC): 58-60 HRC
  • Colour handle: brown
  • Substance handle: ebony
  • Net weight: 4.19 lbs
  • Length of product: 11.81 in
  • Width of product: 0.63 in
  • Height of product: 1.97 in
  • Blade length: 7.09 in
  • Handle length: 4.80 in
  • Handle width: 0.63 in
  • Blade width: 0.79 in
  • Blade thickness: 0.79 in
ZWILLING TWIN 1731 7-inch, fine edge Santoku Knife
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ZWILLING TWIN 1731 7-inch Santoku Knife is rated 5.0 out of 5 by 20.
Rated 5 out of 5 by from Incredible This knife is absolutely incredible to use. It has an amazing 10 degree edge on a blade made from Cronidur steel that reaches an impressive 60 on the hardness scale. That means you will be hard pressed to find a knife that is this hard and that will retain it's razor sharp edge use after use. It goes through a patented ice hardening process that ensures it will also be chip and crack resistant. The Twin 1731 has a curved bolster that provides the most comfortable pinch grip for your thumb and forefinger. The ebony handle is like the crown jewel finishing touch.
Date published: 2020-05-13
Rated 5 out of 5 by from Limited Edition This is the most incredible knife you will ever own. It is made from Cronidur 30, the same material used for bearings on space shuttles which makes it 100s times more durable than anything on the market. The blade has a razor sharp edge just like Japanese knives and has the signature curved bolster which makes everyone feel like a chef. The solid handle is made from stunningly beautiful ebony wood which is has a great weight and feel. They made a limited number of these knives to celebrate their anniversary so it truly is a collector's item.
Date published: 2020-05-07
Rated 5 out of 5 by from These are hands down the best German knives on the market. An heirloom knife that will last your life time and those after you. The Ebony wood handles are gorgeous and feel smooth and secure in the hand. The curved bolster is styled to make the pinch grip comfortable providing complete control and less stress on the wrist. With a 12.5 degree angle these knives cut like a Japanese style knife and the innovative Cronidur 30 steel keeps the edge sharp through the toughest projects. Simply an exceptional cutting tool.
Date published: 2020-04-22
Rated 5 out of 5 by from best of the best This is the most amazing knife. The Twin 1731 collection blades are made from Cronidur steel which is extremely rare for use in cutlery. The steel is very hard and corrosion resistant. The blade is sharpened to the original heritage 12.5 degree angles giving a superior fine cutting edge that is easy to maintain. The curved bolster encourages the proper holding of the knife making it an extension of my arm and giving me more accuracy.The wood handle is very attractive and comfortable to hold.
Date published: 2020-08-24
Rated 5 out of 5 by from The best Zwilling Santoku The Twin 1731 collection is one of the most beautiful and best that Zwilling has ever made. They took the look of the Zwilling Pro knives with the curved bolster, but they used a different steel with the Cronidor 30 (a steel used on space shuttles) that is harder and sharper and then accented the blade with an ebony wood handle that is seamless and rivetless, making this a statement knife. A very unique Santoku knife, this is the German knife you want in your kitchen.
Date published: 2020-04-16
Rated 5 out of 5 by from It doesn't get any better than this! This Santoku from the 1731 collection is a superb knife that performs and is one beautiful knife to use! the oiled ebony handle is so chic and stunning - it really catches your eye and seamlessly becomes part of the bolster and blade. Such a beautiful design, you will want more than 1 knife from this series. Hand finished by artisans!
Date published: 2020-05-09
Rated 5 out of 5 by from This beautiful TWIN 1731 santoku knife makes a great addition to any knife collection. Chopping and mincing is no problem with this classy and comfortable handle and innovative curved bolster, designed for the professional pinch grip. The signature German steel blade stays sharp for a long time and makes prep work easier than ever before.
Date published: 2020-04-15
Rated 5 out of 5 by from Cutlery At Its Best The Twin 1731 is the utmost quality cutlery in the market. Its made from Cronidur 30 steel which translates to 100 times tougher than other steels as well as 100 times more resistant to corrosion. The handle is made from the beautiful Ebony Wood. It is by far the most comfortable knife I have ever held.
Date published: 2020-04-07
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