Kershaw Injection 3.5 Folding Knife Designed by Todd Rexford - 3830

Kershaw Reviews

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Kershaw Injection 3.5 Folding Knife Designed by Todd Rexford - 3830

A bigger, bolder Todd Rexford design

Custom details without the custom price—that's the new Injection 3.5 from Kershaw and custom knifemaker Todd Rexford. 

From the tip of its classic drop-point blade to its 3D-machined G-10 handle, the Injection offers streamlined good looks. Details like decorative pivot hardware and machined thumbstuds give the Injection a high-end custom look and feel. The G-10 handle features six incised cutouts on each side, letting you see through to the stainless steel liners. The G-10 is slightly textured for a secure grip. Even the backspacer is cool; it's chamfered (cut at an angle) on the back end. Another nice detail is the inset lanyard pin so nothing interrupts the smooth line of the knife. And all of this at a price that definitely won't break the bank.

The 3 1/2-in. blade gives you a little extra length for taking on larger tasks. Built of high-performance 8Cr13MoV, it comes razor-sharp and holds its edge well. The manual opening is smooth and easy. Once open, the blade is secured with a steel locking liner. The pocketclip is reversible for left- or right-handed carry. Want a slightly smaller knife? Check out the Injection 3.0.


  • Manual - There is no mechanical assist, such as SpeedSafe, used to open the folding knife. It opens the classic, old-school way.
  • Liner Lock - Locks the blade open during use; one side of the knife’s steel “liner,” the steel plate to which the handle scales are attached, moves into position behind the blade to securely lock it open.
  • Reversible - Pre-drilled holes in the handle enable the user to change either the tip position or the side on which the knife carries.
  • Thumbstud
  • Steel - 8CR13MOV, Bead-Blasted Finish
  • Handle - 3D Machined G-10
  • Blade Length 3 1/2 in (8.9 cm)
  • Closed Length - 4 1/2 in (11.4 cm)
  • Overall Length - 8 in (20.3 cm)
  • Weight - 4.4 oz
Mountain Khaki
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