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TX399

Double Lock Folder
  • 3.9 IN BLADE
  • DOUBLE LOCK
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$39.99

COAST warranties its COAST knives, tools, COAST LED Flashlights/Headlamps and ZITHION-X AA/AAA Batteries to be free of defects in materials and workmanship for the life of the original purchaser. This warranty does not cover normal wear and tear, nor damage resulting from misuse or neglect. Warranty does not cover batteries and charging accessories (or damage caused by either). Non-ZXAA or ZXAAA Batteries or damage caused by batteries (i.e. leakage) is not included in the guarantee.

To begin the warranty process with your COAST product, please complete the Online Warranty Request Form.

Designed from parameters given by former elite special forces members, the TX399 Knife is one of the founding members of our tactical collection. Utilizing our Double Lock technology, any operator can work with confidence knowing that the added safety prevents the knife...

Designed from parameters given by former elite special forces members, the TX399 Knife is one of the founding members of our tactical collection. Utilizing our Double Lock technology, any operator can work with confidence knowing that the added safety prevents the knife from accidentally closing. It easily opens with one hand using a reversible thumb stud, and you can adjust the two position pocket clip to adapt to your carrying style.

With Coast’s commitment to quality, the TX399 Knife is backed by Coast’s lifetime warranty against defects in materials and workmanship.

  • Features
    • Double Lock

      One blade, twice the safety. During standard use, the Liner-Lock automatically engages and locks the blade open. But when you need to make more rugged cuts, push the Double Lock switch forward to block the Liner-Lock from possibly disengaging and allowing the blade to close on your hand. Adjust the safety detent-action (which controls how easily the knife closes) with the tension screw on the side of the knife.
    • Thumb Stud

      Open the knife with a quick flick. A small stud is mounted on the knife blade to allow for easy, one-handed opening.
    • Two Position Knife Clip

      Carry your knife how it suits you best. With COAST’s Two Position Knife Clip, you can adjust the pocket clip to how you wear the knife, with easy access to your dominant hand.
  • Specifications
    • Blade Length 3.9 in / 9.9 cm
    • Blade Material 9Cr18Mov Stainless Steel
    • Handle Material Nylon
    • Length Closed 5.0 in / 12.7 cm
    • Length Open 9.0 in / 22.9 cm
    • Weight 3.7 oz / 104 g
  • Double Lock

    One blade, twice the safety. During standard use, the Liner-Lock automatically engages and locks the blade open. But when you need to make more rugged cuts, push the Double Lock switch forward to block the Liner-Lock from possibly disengaging and allowing the blade to close on your hand. Adjust the safety detent-action (which controls how easily the knife closes) with the tension screw on the side of the knife.
  • Thumb Stud

    Open the knife with a quick flick. A small stud is mounted on the knife blade to allow for easy, one-handed opening.
  • Two Position Knife Clip

    Carry your knife how it suits you best. With COAST’s Two Position Knife Clip, you can adjust the pocket clip to how you wear the knife, with easy access to your dominant hand.
  • Blade Length 3.9 in / 9.9 cm
  • Blade Material 9Cr18Mov Stainless Steel
  • Handle Material Nylon
  • Length Closed 5.0 in / 12.7 cm
  • Length Open 9.0 in / 22.9 cm
  • Weight 3.7 oz / 104 g

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