Knife Review: Kershaw Injection 3.5

 Image courtesy Don for TTAK [Editor’s Note: many of us were intrigued by the Kershaw Injection, but reader Don liked it so much he bought one immediamente. This is his quick review of this very-new knife.]

I ordered one after you posted this, because I really like the lines on this knife. The UPS guy just dropped it off about an hour and 40 minutes ago.

The blade was reasonably sharp out of the box, but a slightly toothy sharp. The edge was not polished, which I expected for this price point. It was almost certainly sharpened with some kind of wheel sharpener at the factory. I’d prefer very slightly less angle on the edge. The grinds at the point where close to visually symmetric when viewed from the trailing edge of the blade, which is not bad at all.

Image courtesy Don for TTAK

I hit it with the 4000 and then the 8000 grit water stone and then lightly with a ultra fine ceramic. The edge now has a mirror shine to it and it is nicely sharp. I think this steel 8Cr13MoV, is supposed to be very similar to AUS-8 (which I think the same as 8Cr15Mov). It certainly feels close to sharpening AUS-8 (a little slippery) and the finished edge has a familiar feel to it. The ricasso is adequate enough to ensure you can get to the whole edge without rubbing the handle on the edge of your stones (pet peeve).

Image courtesy Don for TTAK

The thumb stud is fairly large has these subtle scallop cuts in it which are actually pretty functional, giving your thumb a little traction. I’d like it if it had some jimping on the trailing edge of the tang and on the bottom of the handle near the liner lock.

Image courtesy Don for TTAK

The pivot mechanism feels really great and really sturdy. The knife snaps open easily and with authority with a flick of the wrist. I haven’t taken it apart to see what it is yet. There’s no side to side or up and down play in the mechanism.

Image courtesy Don for TTAK

The liner lock is adequate. The liner lock is about half as thick as the blade steel. For comparison, my Kershaw Speedsafe liner lock is about a third the blade thickness, so this was a pleasant surprise.

Image courtesy Don for TTAK

The handle construction seems really sturdy. The G10 scales feel good in the hand and are attractively contoured. They are fit to the liners well, but not perfect. A little bit of light shows through at one of the corners and the edges aren’t perfect but close. Two tiny torx hold each scale on and I am uncertain if the pivot engages with the scales, or if it is a pass through.

Image courtesy Don for TTAK

The handle’s about half flow through and half backspacer. It’s got two good sized standoffs along the top holding it together. The liners are pretty thick and the handle construction is symmetric through its thickness. If you pinch the handle on either side with moderate pressure at the at the weakest point in the center of the handle the two halves of the handle do not bend in much at all. This I like. The pocket clip seems sturdy and is reversible with two tiny torx.

Image courtesy Don for TTAK

The scales and the pocket clip take the same size torx, the pivot mechanism looks like it takes a slightly smaller torx. It appears you can take the scales off without perturbing the pivot mechanism but I have not verified this yet, if so that would be really nice.

Image courtesy Don for TTAK

I’ve done no tests with it other than sharpening so all I can say is it sharpens nicely for what it is, is seems to be built well, and its got killer lines with the wide full flat ground drop point blade shape and the clean looking handle shape. This knife at $36.65 is easily of equivalent construction quality to what would be a respectable $60 offering from other makers.


  1. Nathan says:

    The 8Cr13Mov steel takes a wicked edge, but the edge holding is not great. When I worked in a grocery store they my knives with 8Cr only lasted a day before I had to sharpen them

  2. Tom says:

    Looks like a Benchmade 707 Sequel

  3. knightofbob says:

    “Needs to be sharpened out of the box” is a dealbreaker for me, if I plan on using it.

    1. Don says:

      It was sharp out of the box. The edge was not polished, but it was sharp.

  4. janitor says:

    looks like a fine stocking stuffer for some scouts or aspiring outdoorsmen( or ladies). i cant bring myself to buy my little brothers and sisters a “real knife” because i know they will lose it or break it. its been confirmed several times. at least with a kershaw there is pretty much a no questions asked repair/replace policy. cant get that with a cheapo flea market/gunshow knife.

    1. sagebrushracer says:

      That is why they invented Mora Knives. The Mora Craftline HQ has the same thick blade of the Mora bushcraft, but at a 14 dollar price point on amazon.

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Knife Review: Kershaw Injection 3.5

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