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Thin Red Line Fang FS-3 OTF Knife


The Red Line Fang FS-3 is custom Cerakoted and comes standard with a D2 steel blade, pocket clip, high-quality Zinc Alloy handle, CNC machined internal parts and a high performance spring that offers a smooth operation. The FS-3 is made for both right and left handed users. 


Today, the term “Thin Red Line” is a symbol used by fire departments to show respect for firefighters injured and killed in the line of duty. As firefighters are periled, they place their lives second to those they protect. CobraTec Knives honors the dedication of these brave individuals.


All CobraTec OTF knives are backed by our LIFETIME WARRANTY.


  • 12 ounces
  • Dual Action OTF
  • 3.5 inch D2 Steel Blade
  • 5 inch high-grade  Cerakoted Aluminum Alloy Handle
  • 9 inches in total length with glass breaker


What is Cerakote?

Cerakote is a Polymer-Ceramic Composite coating that can be applied to metals, plastic, polymers and wood. The unique formulation used for Cerakote ceramic coating enhances a number of physical performance properties including abrasion/wear resistance, corrosion resistance, chemical resistance, impact strength, and hardness.


Order Processing and Delivery

*EVERY CobraTec Knife is handmade to each customers specifications.

*Average order processing time can take up to 2 weeks so we can custom assemble your knives.

* Once your item is shipped a USPS tracking number will be issued.


  • All CobraTec OTF Knives carry a Lifetime Warranty through the manufacturer  NOT thru EveryDay Preppers. 



    You must register your knife within 30 days of purchase to verify ownership.  To return a knife under warranty you must have completed the warranty registration.


    CobraTec Warranty will not cover the following:  Loss, damange caused by abuse, neglect, accidents, improper blade sharpening, disassembly, paint or normal wear and tear. 

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