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Zero Tolerance 0450CF Sinkevich Carbon Fiber Folder



Sleek, durable, and easy to use, Zero Tolerance’s 0450CF Sinkevich Carbon Fiber Folder proudly lives up to the overbuilt standards for which ZT is well known.

A dark, refined alternative to the original 0450 Small Sinkevich Titanium Folder, the 0450CF Sinkevich Carbon Fiber Folder offers a robust combination of durable, premium-quality materials. The S35VN stainless steel blade provides exceptional toughness, wear resistance, and edge retention; it’s also Tungsten DLC coated for matte-black good looks and enhanced performance. The carbon fiber front handle scale balances the knife’s solid construction with lightweight convenience, while the DLC coated titanium back handle offers a secure frame lock, allowing you to cut with confidence every time. Zero Tolerance’s KVT ball-bearing system enables smooth, easy opening of the knife for both left and right-handed users. A left/right reversible pocketclip allows for easy carrying and deployment of the 0450CF whenever you need it. As an extra visual touch, Zero Tolerance has added two emerald-green anodized-aluminum tube spacers that are especially eyecatching, standing out against the black handle.


  • Made in the USA
  • KVT ball-bearing opening system
  • Manual flipper
  • Titanium frame lock with hardened steel lockbar insert
  • Reversible (left/right) pocketclip
  • Steel: S35VN with DLC coating
  • Handle: Carbon fiber front, titanium back
  • Blade length: 3.25 in. (8.3 cm)
  • Closed length: 4.1 in. (10.4 cm)
  • Overall length: 7.4 in. (18.8 cm)
  • Weight: 2.7 oz. (76.5 g)

S35VN Steel Blade
Crucible’s S35VN modifies the formula of S30V for enhanced toughness and resistance to edge chipping with no loss of wear resistance. Its formula promotes the formation of niobium carbides along with the vanadium and chromium carbides. It provides a sharper, longer-lasting edge.

KVT Opening System

  • A manual opening system
  • Enables smooth and easy one-handed opening of ZT’s heavier blades, even without a spring or torsion bar
  • Uses ball bearings to enable the blade to glide out of the handle

The KVT opening system is a manual opening system that enables smooth, easy blade opening without the use of a spring or torsion bar to “assist” the blade out of the handle. Instead, the KVT system uses a series of ball bearings that surround the pivot point of certain ZeroTolerance folding knives. As a knife user pulls back on the flipper blade intrusion or pushes outward on the thumbstud, the ball bearings rotate so that the blade glides out of the handle then locks into place, ready for use.

Carbon Fiber and Titanium Handle
Carbon fiber is composed of carbon atoms bonded together to form a long chain; they are extremely strong and lightweight. These carbon fibers are woven together, then layered with epoxy and compressed under high pressure to create the carbon fiber sheet from which ZT makes the handle. Titanium is a lightweight, corrosion-resistant metal with high tensile strength. ZT uses it as a handle material, a liner, a lockbar, or as part of a performance-enhancing coating.

Frame Lock
In a frame lock knife, the knife handle – its “frame” – consists of two plates of material on either side of the blade. To ensure a secure lock up, one or both of these plates is usually metal. When the knife is opened, the metal side of the frame, the lockbar, butts up against the backend of the blade (the tang) and prevents the blade from closing. To close a frame lock knife, the user pushes the frame to the side, unblocking the blade, and folds the blade back into the handle. Like locking liner knives, frame locks are manufactured so that the locking side of the frame is angled toward the interior of the knife, creating a bias toward the locked position. Both the blade tang and the lockbar are precisely angled so they fit together for a secure, reliable lockup. The thickness of the frame material blocking the blade open makes the frame lock extremely sturdy.

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