Zero Tolerance 0223 Knife

Zero Tolerance 0223 Knife Review

Zero Tolerance 0223 Knife

Manufacturer: Zero Tolerance
Model number: 0223
Price: 300.00
Weight: 4.7 ounce
I’ve been carrying the Zero Tolerance 0223 knife for a month or two and my first impression still sticks. When I first opened this knife I said that it screamed quality – it appeared extremely well-built and was smooth to open. This knife, when open, feels like a  fixed blade sheath knife. The Zero Tolerance 0223 Knife was designed by Tim Galyean, and was inspired a classic military knife.

Zero Tolerance 0223 Specifications

  • Made in the USA
  • Manual open, KVT ball-bearing system
  • Frame lock, with steel lockbar insert
  • Reversible clip (left/right, tip-up)
  • Steel: CPM 20CV, DLC coating
  • Handle: Titanium, DLC coating, earth brown G10
  • Blade Length: 3.5 in. (8.9 cm)
  • Blade Thickness: 0.156 in. (0.4 cm)
  • Closed Length: 5 in. (12.8 cm)
  • Overall Length: 8.6 in. (21.8 cm)
  • Weight: 4.7 oz. (134 g)

When I look at a knife I have five criteria

  1. Quality
  2. Durability
  3. Functionality
  4. Ease of use
  5. Application


The CPM 20CV blade steel offers exceptional hardness and wear resistance to take and hold a sharp edge, toughness to resist impact, and—with the highest level of chromium of any high-vanadium steel—excellent corrosion resistance. For an extra measure of blade protection, ZT adds black DLC (Diamond-Like Carbon) coating, ceramic bead blasted for a non-glare finish.


The titanium handle is also DLC coated and bead blasted to extend the matte look. The 0223 has a sturdy titanium frame lock with a hardened steel lockbar insert for reliable lockup. ZT’s KVT ball-bearing system, combined with a highly ergonomic flipper, make the 0223 quick and easy to open, too. The 0223’s earth brown G10 handle scales are reminiscent of the original military knife’s stacked leather handle. Our G10 scales wrap around to the top of the handle and meet in the middle to provide a comfortable and secure grip—as well as helping to keep debris out of your knife.


The blade is clip-point style with heavy jimping along the spine and a cutout to decrease weight.

The pocketclip is left/right reversible and made of bent steel with a black Teflon® finish. The bronze-anodized titanium tube spacer in the handle is secured by two custom screws. A series of decorative holes drilled in the ricasso of the blade echo the jimping along the spine and add to the subtle details of this remarkably handsome knife.

Ease of Use

The KVT ball-bearing system is by far the smoothest opening system I’ve experienced. Coupled with a quality frame lock, with steel lockbar insert, this knife s easy to use.


Cutting open boxes, clam shell packaging, opening letter, cutting zip ties or sharpening pencils are  probably the primary uses for my pocket knives.

Overall Impression

This Zero Tolerance 0223 is great all around EDC knife, but it is pricey.  Don’t let its simple appearance fool you, this knife has utility written all over it. From the blade design, to the handle construction, this knife is excellent. My overall impression is this is a high quality, no nonsense knife that functions well in many situations, sturdy enough for an everyday carry and one of those that you’ll hand down to your son or daughter.

Zero Tolerance 0223 Knife

About the author

Rob Robillard

Robert Robillard is a remodeler, general contractor, and principal of a carpentry and renovation business located in Concord, Massachusetts, and serves as the Editor of Tool Box Buzz and founding editor of A Concord Carpenter . Rob is in charge of our Tool and Product Review - Tool and Product Review - Video Channel, , where we post all of our tool reviews and video tutorials. Rob enjoys using his knowledge and experience to help and educate building professionals as well as DIYers on best practices in the remodeling industry. The Concord Carpenter's motto: "Well done is better than well said!" : Read more about Rob Robillard

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