Dauntless Manufacturing
Crossbones UBK
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✓ Lifetime warranty included — we stand behind every blade we make.
✓ In your cart means in stock — orders ship within 2 business days.
The Crossbones UBK is assembled from older-stock Utility Blade Karambit components that may show minor cosmetic imperfections, such as small chips or wear in the anodized finish. These components are fully functional and are offered through our Crossbones collection at a reduced price.
Functionally, this is the same UBK: a compact fixed-blade-style karambit that combines a secure, controlled grip with the convenience of replaceable utility blades. A dull or damaged edge can be replaced in seconds using the wrench stored directly in the handle.
Available materials, colors, rings, and configurations are limited to the components we currently have on hand. Cosmetic condition will vary slightly from piece to piece, but imperfections are minor and do not affect function.
Each Crossbones UBK ships with a sheath, belt clip, and blade-change wrench.
The Large Ring has a 1.1" inside diameter, while the Medium Ring has a 1.0" inside diameter.
International orders are shipped without a utility blade installed.
Replaceable Utility Blade System
The UBK accepts all standard utility knife blades, so a sharp edge is always a quick change away. A standard utility style blade uses a straight edge and razor-sharp stainless steel, and replacements are inexpensive and easy to find. Short blade length keeps the cutting edge compact and controllable. The magnetically retained wrench in the handle lets you change blades or disassemble the knife without a separate tool.
Ring and Handle Options
The karambit finger ring provides retention and control in a forward or reverse grip. Choose the Large Ring with a 1.1-inch inside diameter or the Medium Ring at 1 inch to match your finger and glove size. A block off plate replaces the finger hole for a ringless profile. Handle options include Bronze and Brass, which develop a patina over time, along with a Carbon Fiber scale option.
Sheath and Carry Options
The UBK ships with a custom ambidextrous Kydex sheath. A centerline-mounted Discreet Carry Concepts clip supports fast deployment and pocket or belt carry. The sheath also mounts to most MOLLE and belt attachment systems through its existing grommet holes, giving you carry options on a plate carrier, belt, or pack.
Built in North Carolina
Every UBK is machined and built in North Carolina, held to the same quality standard as the rest of our knives. Each unit is assembled to order and backed by a lifetime warranty.
Specifications
- Style: Fixed blade karambit
- Blade: Accepts standard utility knife blades
- Large Ring inside diameter: 1.1 inches
- Medium Ring inside diameter: 1 inch
- Sheath: Ambidextrous Kydex with Discreet Carry Concepts clip
- Wrench: Magnetically retained in the handle
- Body options: Bronze, Brass
- Scale option: Carbon Fiber
- Assembled to order
Frequently Asked Questions
What is a karambit utility knife?
A karambit utility knife combines the curved, ringed handle of a classic knife design with a replaceable utility blade. The finger ring provides a secure grip and quick retention, while the standard blade keeps a sharp edge on hand for daily cutting.
What blades does the UBK use?
The UBK accepts all standard utility knife blades, the same razor blades sold at any hardware store. This keeps replacements cheap and easy to source. International orders ship without a blade.
How do I change the blade?
A wrench is magnetically retained in the handle. Use it to loosen the hardware, swap the blade, and reassemble in seconds. The same tool disassembles the knife for cleaning.
What ring sizes are available?
The UBK offers a Large Ring with a 1.1-inch inside diameter and a Medium Ring at 1 inch. A block off plate is available for users who want a profile with no finger hole.
Is the UBK good for self defense?
The karambit is a proven self defense design. Held in reverse grip, the finger ring locks the knife to your hand and keeps you in control. Among tactical knives, the karambit stands out for retention, and the UBK doubles as an everyday utility tool.