Kershaw 3880 Thermite Assisted 3-1/2" Stonewash Plain Blade, G10 and Steel Handles

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Our Price* : $36.95
MSRP* : $56.99 | You Save* : $36.04 (63%)


KS3880: 3880 Thermite

Kershaw Knives


A thermite is a mixture that, when ignited, produces a huge amount of heat. And we think you'll agree, the Thermite is hot.

With tactical styling and practical performance, the Thermite, designed by Rick Hinderer, has a great look and great features. The Thermite offers Rick's no-nonsense functionality, but with enough style that co-workers will look on with a satisfying touch of envy when you take the Thermite out of your pocket.

The 3 1/2-in. stonewashed blade is hollow-ground for excellent slicing capabilities with a flat-ground "spanto" tip for strong piercing. A machined G-10 front scale and a heavily textured backspacer add to the Thermite's good looks. On the practical side, the back handle is stainless steel with a frame lock and lockbar stabilizer. 

For easy opening, the Thermite is SpeedSafe-equipped and can be accessed with the ambidextrous flipper or thumbstud. It comes equipped with Kershaw's Quad-Carry/deep-carry pocketclip.


  • Flipper - May be used on either manual or assisted opening knives. The "flipper" is a protrusion on the back of the blade that the user can pull back on, or flip, in order to move the blade easily out of the handle.
  • SpeedSafe® - Assists you to open any SpeedSafe® knife quickly and easily with a manual push on the thumbstud or pull back on the flipper; built into many Kershaw best sellers.
  • Frame Lock - A portion of the handle (the knife frame) moves behind the blade to lock it into position during use. This is a safety feature of the knife.
  • Quad-carry - The user may position the pocketclip for tip-up or tip-down, left- or right-handed carry.


  • SpeedSafe assisted opening
  • Frame lock with lockbar stabilizer
  • Flipper and thumbstud
  • Quad-carry; deep-carry
  • Steel: 8Cr13MoV, stonewashed finish
  • Handle: Machined G-10 front, 410 steel back
  • Blade length: 3 1/2 in. (8.9 cm)
  • Closed length: 4 7/8 in. (20 cm)
  • Overall length: 8 3/8 in. (21.3 cm)
  • Weight: 4.9 oz.
  • Made in China

UPC Code: 087171034980

Pocket Clip
Pocket Clip Includes a pocket clip for easy accessibility and a more secure carry.
8CR13 Stainless Steel
8CR13 Stainless Steel Considered a value steel, 8Cr13 steel provides adequate corrosion resistance but with slightly more carbon than AUS-8, it will sharpen up and hold an edge better.
Frame Lock
Frame Lock Developed by Chris Reeve, it functions like a liner lock but the lock is comprised of one of the handle scales. It's an extremely strong and easy to manipulate lock.
G10 Handles
G10 Handles Formed in a sheet under high pressure by combining fiberglass and an epoxy resin binder. These handles are lightweight and shaped to ensure a solid grip.
Kershaw 3880 Thermite Assisted 3-1/2" Stonewash Plain Blade, G10 and Steel Handlesrated 4.565 stars out of 5 (23 reviews)
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Kershaw 3880 Thermite Assisted 3-1/2" Stonewash Plain Blade, G10 and Steel Handles
rated 5 stars out of 5
San Francisco Bay Area
Oct 16, 2018
Pros: Handle Material, Pocket Clip, Lock Ease of Use, Handle Feel, Overall Quality, Ease of Opening, Blade Sharpness
Cons: None
My New EDC
I usually carry a Kershaw Shallot or Blur but I am now going to start carrying the Thermite instead. Still love my Shallot but it's mainly a light cutting blade and the reason I like it so much is mainly because of it's shape and style. The Blur has a larger blade than the Shallot but I prefer a flipper to using a thumbstud to deploy the blade. The Thermite has a larger and much thicker blade than both the Shallot and Blur and also has the spanto tip that looks like it could penetrate sheet metal of comparable thickness but the blade is still thin enough for normal slicing duties. The Thermite blade can be used and abused in a way that I wouldn't even consider using the Shallot or the Blur and I think doubt there is little I would need a knife for that the Thermite blade can't handle, even w/o serrations. The etched handle provides a nice grip and the plain metal backing allows the knife to slip easily into my front pocket and the deep clip entirely hides the body of the knife from view. The knife frame is long but thin and does not feel too bulky and is not noticeable in my pocket. Opening w/the flipper is a breeze and the knife comes w/the blade facing up (when closed) which puts the flipper in immediate contact w/your index finger as you remove it from your pocket for the fastest method of deployment. The are also thumbstuds on the blade that you can use w/SpeedSafe spring assist to open the blade but why use the thumbstud when using the flipper is so much faster and easier? I currently own over 35 Kershaw knives of various sizes and types and IMO the Thermite is the best of the lot for use as an EDC knife. Doesn't mean that the other knives can't be used as an EDC but while they have various pros & cons, the Thermite's cons are limited only to its size (which I do not consider a disadvantage) and it is not so heavy that I can feel it clipped to my pocket, unlike my Cryo II us feels like a lead weight.So, if you like larger folding knifes (as I do) and want a knife that you can use for normal as well as "tactical" purposes, I'd highly recommend you consider the Thermite, which has been discontinued, and may be difficult to find in the future.
Kershaw 3880 Thermite Assisted 3-1/2" Stonewash Plain Blade, G10 and Steel Handles
rated 5 stars out of 5
Bud B
Niceville, Fl
Sep 24, 2018
Pros: Blade Sharpness, Lock Type, Handle Material, Overall Quality, Pocket Clip, Ease of Opening, Handle Feel, Weight, Lock Ease of Use, Blade Material
Cons: None
One of my favorite EDC Knives
I use this knife for pretty much anything, at work or around the house. The best thing about it is how quickly I can deploy it and how comfortable it is in my hand. One of the better things about this knife is the spanto tip, I'd like to see more knives with that tip style (in my price range). Another thing I'd like to say is how much I appreciate's customer service. The questions I've had were nicely answered almost immediately by a real person from
Kershaw 3880 Thermite Assisted 3-1/2" Stonewash Plain Blade, G10 and Steel Handles
rated 5 stars out of 5
Robert C
12570 james madison hwy. Palmyra Va. 22963
Dec 09, 2016
Pros: Lock Type, Handle Material, Blade Sharpness, Blade Material, Ease of Opening, Handle Feel, Weight, Lock Ease of Use, Overall Quality
Cons: Pocket Clip, None
Kershaw 3880
In my work, cutting rope, stripping wire, opening boxes. It works as stated. You covered everything.
Read all 23 Reviews »
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