Fortius Arms KeyBiner Carabiner review

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I don’t like putting keys in my pockets.  Since I don’t always carry a bag, I’ve been looking for a clever way to keys onto things.  But what if you could combine both?  That’s where the Fortius Arms KeyBiner Carabiner comes in.


That’s right, a carabiner that actually holds your keys.  If you use a carabiner or similar clip to hold your keys, this might be a step up.


The KeyBiner clever adds other functions, such as a flat screwdriver head, screw bit/wrench openings, and a bottle opener.



In the plastic bag, you get an assortment of washers, screws, and a small card with instructions.


The included screws come in three lengths, depending on the number of keys you’ll use.  keybiner-06This is a scanned image of the instructions.  You’ll need a Philips head screwdriver to get the job done.
keybiner-08I was sent the red aluminum version.  The two halves are quite light, weighing in at about 25g or 0.8oz.



I tried assembling the KeyBiner without any fuss.  Three keys worked just fine with the “medium” length screws.

keybiner-11On the left, I’m holding the KeyBiner “pointy” side out.  On the right, the curved carabiner side out.  Of course, which end you use it entirely up to you.  I ended up taking it apart a few times to get the serrated edge on the side I liked.keybiner-12 keybiner-13

If you’ve got a thicker key, such as those typically found on car keys, you’re out of luck.  Fortunately, the KeyBiner has a few ways you can add your car keys.  Simply clip the KeyBiner onto your key ring, or attach it on the screwdriver (pointy) end.

In actual practice, I found the KeyBiner was slightly bulkier, but it cut down on the number of “loose keys” flopping about.  My car key fob is bulky enough as it is, so I’m not totally sure how I feel about adding all this extra mass.

If all you carry are flat keys, then the Fortius Arms KeyBiner Carabiner is an easy pick.  The whole thing slips easily into your pocket, on a bag, or a belt loop.

Source: The sample for this review was provided by Fortius Arms. Please visit for more info.


Product Information

Price:$35-$70 depending on material ($40 for red aluminum as tested)
Manufacturer:Fortius Arms
  • Philips screwdriver for assembly, flat keys
  • Clever way to carry your keys, plus a few basic tools
  • Adds significant bulk especially if you add car keys via keyring.

5 thoughts on “Fortius Arms KeyBiner Carabiner review”

  1. Gadgeteer Comment Policy - Please read before commenting
  2. I got all 3 kinds as part of their Kickstarter project. They were a very good project with lots of information and on time delivery (or so).
    It’s kinds of fiddly to attach the keys – you need to use a screwdriver and use the correct size screw and washers. And you need to use one of their nylon washers to make the keys pivot easier – this is the one area I knock them. It’s so easy to lose the washers and they only included 2 washers so if you lose one you’re screwed.

  3. I also bought a couple from the Kickstarter campaign. I use the to carry backup sets of keys. I found the wire gate to be too weak to rely on as a regular user. The finish was also kind of rough and many edges still had a slight burr.

  4. And this is a good time to remind people not to post photos of their real keys online because duplicate keys can be made from photos.

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