Cold Steel 39FK Double Agent I Karambit 3" Plain Blade, Grivory Grip

$29.95

MSRP* : $49.99 | You Save* : $20.04 (40%)
Part #: CS39FK | Cold Steel Knives

Description

CS39FK: Cold Steel 39FK Double Agent I Karambit 3" Plain Blade, Grivory Grip

Cold Steel Knives

CS39FK: Double Agent I - Karambit Blade Style

Cold Steel®

Cold Steel’s Double Agent™ neck knives possess a significant set of advantages worth noting. Designed by Zach Whitson, with either a Karambit or Clip Point blade style, they’re thin, flat, and super light (a little over 3 ounces including sheath). This makes them easy to conceal and very comfortable to wear. Their most audacious and notable feature, however, is their double ring handle design. Slip an index finger through the front ring nearest the blade and your pinky finger through the rear ring and close your fist to obtain a forward grip and vice versa for a reverse grip.

It doesn’t matter how hard you cut, chop, hack, hammer or thrust with the Double Agent™. Its twin rings will always prevent your hand from sliding forward on the razor sharp edge and will likewise resist the effects of centrifugal force or the efforts of an adversary to wrest the Double Agent™ from your grasp.

Specifications

  • Blade: 3"
  • Overall: 7 7/8"
  • Thick: 2.3mm
  • Weight: 2.5 oz.
  • Steel: Japanese AUS 8A Stainless

UPC Code: 705442007401

Related Categories

Cold Steel Knives, Cold Steel Double Agent Fixed Blade Knives Series, AUS-8 Blade Steel, Zytel Handle Material, Fixed Blade Knives, Fixed Blade Knives Neck Knives, Zach Whitson

Product Handle Badge: Zytel Handles
Product Steel Type Badge: AUS-8 Stainless Steel
Product Sheath Badge: Kydex Sheath
Cold Steel 39FK Double Agent I Karambit 3" Plain Blade, Grivory Griprated 4.609 stars out of 5 (64 reviews)
4.6 out of 5 stars
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Cold Steel 39FK Double Agent I Karambit 3" Plain Blade, Grivory Grip
rated 4 stars out of 5
Our Lady Of Blades
Western PA
Jul 15, 2025
Pros: Blade Sharpness, Finish, Overall Quality, Weight
Cons: Blade Material, Sheath/Scabbard
Super aggressive cutter with secure grip, needs a steel upgrade
I use the plain edge Double Agent I nearly everyday as a work knife. It's unusually thin for a karambit, which helps cutting performance tremendously.This knife performs better on cardboard and heavy leather than anything else I've tried, and stabs well for a recurve. The double ring setup provides lots of very secure holds.There are three cons. 1: The handle is very slim. I bulked it out by adding a bunch of thick hair ties over the plastic insert, which cost a dollar. Some folks might find the grip comfy out of the box. The rings are wide enough to fit size XL hands. 2: The steel is Cold Steel's iteration of AUS 8, which does not hold an edge well and has had rust problems on my older Recon 1s. It sharpens easily, at least.3: The sheath is fine for a quick draw and is reasonably secure carried on a belt handle-up or horizontally. I wouldn't carry tip-up, as with neck carry.I would pay $120 for a version of this with a kydex taco sheath and a steel like CTS-XHP or Magnacut. At $30 in 2025, it's worth the money as is.
Cold Steel 39FK Double Agent I Karambit 3" Plain Blade, Grivory Grip
rated 5 stars out of 5
White Wolf
EU
Aug 27, 2021
Pros: None
Cons: None
After sheath modification 5*
Great EDC .... but factory sheath is useles!But after simple modification very very useful for quick deploy.https://youtu.be/eQb8nFxeHyw
Cold Steel 39FK Double Agent I Karambit 3" Plain Blade, Grivory Grip
rated 5 stars out of 5
Aj
NC
Mar 09, 2021
Pros: Weight, Handle Material, Overall Quality, Sheath/Scabbard, Blade Sharpness
Cons: None
Like having a claw, I'm holding it right now
I bought this as my first fixed-blade karambit, and I'm very satisfied with it. I sometimes wear it as a neck knife, and find it incredibly satisfying to draw, while never feeling concerned about it falling out.It's incredibly light, and the two finger holes make it feel very secure in the hand. As a downside, it makes it harder to switch grips, as you also have to remove your pinky finger. However, that only takes an extra second, and I'm literally never going to be switching to extended grip in a high-pressure situation.Of course it came sharp out of the box, did you even need to ask? As an entry-level fixed-blade karambit, it's amazing. The review title isn't a lie, I kept it in my hand the entire time I wrote this. When I buy another fixed karambit, I'll get one with the usual one (1) retention ring, but this is a great first buy. Get it before it's gone.
Read all 64 Reviews »