Kershaw ZT ZeroTolerance Knife

By Robert Robillard on Tool Reviews, Weekend warrior

Zero Tolerance 0454 Zero Tolerance 0450 Folding Knife

Zero Tolerance 0450 Sinkevich Titanium Knife

The Kershaw ZT Zero Tolerance Knife, model 0450 is a version of an award-winning collaboration between ZT and custom knife designer Dmitry Sinkevich. It is a version of the 0454 knife, which was a very limited edition.  If you don’t have the 0454 knives, I think Zero Tolerance 0450 is the next best thing!


Zero Tolerance 0454 Zero Tolerance 0450 Folding Knife

Zero Tolerance 0450  Titanium Folding Knife

The 0450 knives copied the original’s streamlined form and high-performance function, but in a more compact version.  It’s designed with a 3.25-inch blade and weighs only 2.9 ounces, thanks to its titanium handle.

First Impressions

The blade came razor-sharp, I especially liked the S35VN stainless blade, and have found it to hold its edge-sharpness, a long time.

The 0450 knife uses a KVT ball-bearing opening system, and finger flipper, allowing a lightning-fast, smooth opening.  This blade opens so fast it actually feels like an open assisted knife instead of a flipper.
The blade is secured open with a titanium frame lock with a hardened steel lock bar insert. The blade is perfectly centered in the frame.
The knife is lightweight and doesn’t take up much room in the pocket, and has a reversible tip-up carry pocket clip for personal carry preference.


  • Blade Length: 3.25″ (8.3 cm)
  • Handle Length: 4.1″ (10.4 cm)
  • Overall Length: 7.4″ (18.8 cm)
  • Closed length: 4.1 Inch (10.4 cm)
  • Blade Steel: S35VN Stonewashed and Satin Finish
  • Handle Material: Titanium
  • Weight: 2.9 Ounce (82.2 g);
  • Designer: Dmitry Sinkevich, based on the award-winning 0454 knife
  • Manual open, KVT ball-bearing system frame lock
  • Reversible (left/right), deep-carry clip
  • Made in the USA

Using the Zero Tolerance 0450

I especially liked that the Kershaw ZT Zero Tolerance Knife is made in the USA.

One thing I took note of was that the Zero Tolerance 0450 Folding Knife was difficult to open, at first.  It seemed that the flipper mechanism takes some time to break in – solved after a few dozen open repetitions.  The KVT opening system is a caged ball-bearing system which is why they made the detent on the knife a little stiff. The stiff detent is what biases the blade towards a closed position, and can make it a bit hard to open at first. If dropped (for instance, if the flipper hits the floor) it can open since there is no spring.

I carried this knife for 60 days as an EDC.   It is a really nice looking and working knife, the fit and finish of the stonewashed handle, clip and polished pivot hardware make this knife almost too good-looking to use daily.

The lightweight and compact frame on this knife were quickly noticed and much appreciated. It has a classy design element that doesn’t blow the budget! The 0450 is a compact and extremely comfortable, every day carry [EDC] knife.

How Much?

The Kershaw ZT Zero Tolerance Knife sells for approximately $16o online here: Zero-Tolerance-0450-Sinkevich-Titanium

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About the author

Robert Robillard

Carpenter / Remodeler / Editor

Rob Robillard is “The Concord Carpenter” Rob is a builder, general contractor, carpenter, woodworker, and editor of Concord Carpenter and ToolBoxBuzz As a General Contractor and carpenter, Rob owns and operates Concord Carpenter LLC. A full-service remodeling and construction company. Rob is a recognized leader in home building best practices and a source for how-to information for building professionals. On this website, Rob covers all aspects of home construction, building science, home improvement, woodworking, remodeling, and some of the best product and tool reviews. Rob is in charge of our Tool and Product Review series - Concord Carpenter Videos where we post all of our tool reviews and video tutorials. Rob approaches remodeling and building construction with a pragmatic and problem-solving approach. He enjoys using his knowledge and experience to help and educate building professionals as well as DIYers on best practices in the construction and remodeling industry. He's a strong advocate for "raising the bar" in the construction trades and promoting the trades to youth. #BeAMentor #Green2Great Craftsmanship, quality, and pride guide his journey on this channel The Concord Carpenter's motto: "Well done is better than well said!" : Read more about Rob

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