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Specifications
Model: A0320
Blade Length: 3.46" | 87.86 mm
Overall Length: 8.21" | 208.55 mm
Blade Width: 1.20" | 30.50 mm
Blade Thickness: 0.138" | 3.50 mm
Blade Material: M390
Blade Grind: Compound
Blade Style: Tanto
Blade Finish: Obsidian DLC
Hardness: HRC 61±1
Handle Length: 4.72" | 118.87 mm
Handle Width: 1.19" | 30.22 mm
Handle Thickness: 0.516" | 13.10 mm
Handle Material: Fat Carbon
Color: Mars Valley
Weight: 4.53 oz | 128.50 g
Opener: Front Flipper | Back Flipper | Thumb Hole | Fuller
Lock Type: Vanchor Lock
Pivot Assembly: Caged Ceramic Ball Bearing
Pocket Clip: Non-reversible | Titanium
Clip Plate Material: /
Carry Position:Tip-up
Knife Type: Manual Folding
Backspacer Material: Titanium
Thumbstud Material: /
Button Material: Titanium
Pivot Collar Material: /
Designer: Vosteed
Thunderbird V — Cinderborn
Fire That Refuses to Fade
Four years in, we chose Thunderbird to mark how far we have come.
For this edition, we explored Metal, Wood, Water, Fire, and Earth within the realm of Light and Shadow. Each element carries its own nature, shaped by the balance between clarity and depth, motion and restraint.
Cinderborn is the fire expression of the seven. Mars Valley FatCarbon combines warm red, orange, and dark layers, while the Obsidian DLC blade carries the darker tones through the rest of the design.
Vosteed 4th Anniversary Special Edition
Limited to 350 Pieces
What's Inside
1. Exclusive Thunderbird numbered from 001- 350
2. Thunderbird and 4th Anniversary laser-engraved on liner

3. 4th Anniversary coin
4. Thunderbird ID card personally signed by designer Yue
The Blade
The 3.46" M390 blade balances edge retention, toughness, and corrosion resistance.
A compound grind combines tip stability with efficient slicing.
The blade is finished in Obsidian DLC. Its dark surface keeps the overall design balanced against the warmer colors of the handle.
Mars Valley FatCarbon
Red, orange, amber, and black layers run throughout the material. The exact balance and placement of these colors will vary from handle to handle.
The pattern gives Cinderborn a warmer appearance while keeping the familiar Thunderbird V profile unchanged.
Vanchor Lock® and Multiple Deployment
The Vanchor Lock® provides secure lockup and smooth operation.
Open Thunderbird V with the front flipper, back flipper, thumb hole, or by holding the lock button and flicking the blade open.
The titanium pocket clip and slightly extended titanium backspacer complete the build. The backspacer forms an integrated lanyard point and carries the Morse code for “V,” a subtle nod to the Vanchor Lock®.

