Kershaw Injection 3.5 Liner Lock Knife (3.5" Bead Blast) 3830

MSRP: $59.95
Our Sale Price: $13.99!
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Item #BHQ-14794


  • Overall Length:8.00"
  • Blade Length:3.50"
  • Blade Thickness:0.12"
  • Blade Material:8Cr13MoV
  • Blade Style:Drop Point
  • Blade Grind:Flat
  • Finish:Bead Blast
  • Edge Type:Plain
  • Handle Length:4.50"
  • Handle Thickness:0.55"
  • Handle Material:G-10
  • Color:Black
  • Frame/Liner:Stainless Steel
  • Weight:4.40 oz.
  • User:Right Hand, Left Hand
  • Pocket Clip:Tip-Up
  • Knife Type:Manual
  • Opener:Thumb Stud
  • Lock Type:Liner Lock
  • Brand:Kershaw
  • Model:Injection
  • Model Number:3820
  • Designer:Todd Rexford
  • Country of Origin:China
  • Best Use:Everyday Carry
  • Product Type:Knife


The Injection 3.5 folder is a Todd Rexford design with milled G-10 scales and a stout liner lock frame. It features custom details that include a decorative pivot, machined countersunk thumb stud and a chamfered backspacer too. The flat ground drop point blade has a bead blast finish and plain cutting edge. The Injection is loaded with all the things you'd want in an everyday carry knife, including a reversible tip-up carry pocket clip.

The Injection 3.5 is the larger version of the Injection model, and has the same custom features as the regular version, the Injection 3.0 knife.


Customer Reviews

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Great Little EDC
Michael J.
1) Outstanding functional value for the price!
2) Rock solid comfortable handle, no flex whatsoever with the G-10
3) Not a deep-carry pocket clip, but rides acceptably low where Kershaw has positioned it
4) My first experience with 8Cr13MoV steel, edge came “so-so” out of the box. Was super easy with only few swipes on sharpener for scary sharp edge
5)Great blade tip for precision work

1) No jimping on rear blade spine for thumb traction, can be slick with wet hands
2) Thumb studs not the most comfortable.

Quick Thoughts:
25 days since purchase. I picked up both the 3.0” and 3.5” versions. Honestly you can’t beat the Injection models, they give you a lot of usable knife for such little investment.

My only comment to those considering a purchase, is the thumb studs. They are 100% fine for normal use. However, if you want a knife you can open/close 500 times while watching a movie, you’ll get one heck of a sore thumb. The studs have traction grooves milled into them which can become painful.
Not a bad knife for the price I paid
Shawn K.
Got it on sale and I'm happy to report that it's a rather nice knife. Good solid build quality, thick liners, great action running on washers, pretty easy to deploy. If I'm nit picking I'd say the thumb studs could use some more texturing and it's a little heavy. The thumbstuds also get in the way of sharpening the blade. It did not come razor sharp so I touched it up with a 1000 grit stone and got it hair popping sharp, it felt like the steel is a little soft but only time and use will tell. Overall it seems well made and has a nice action so I'm having fun flipping it.