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Go nuts with the FS Mini.

Lower rack weight and volume without sacrificing strength or utility with the Metolius FS Mini Biner. Metolius maintained carabiner strength while reducing the size in the FS Mini, so ounce-oriented climbers can enjoy a lighter load on those multi-pitch pushes. At a mere 25g, these rigs are also easy to clip and can help you color coordinate your cams and nuts.

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Metolius F.S. Mini Carabiner

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Here's what others have to say...

4 5

It comes down to handling of the size.

I love them as a utility carabiner for a multitude of uses. I tried using them for technical stuff and they just seem really small and kinda difficult to use. I am not a weight weenie and I would prefer a larger carabiner that is easier to clip and unclip. I just find they aren't the one I reach for when I look at my rack.

Nice little biner

Nice little biner

A good buy for multi-purpose. Keys, hammocks, climbing, stuff.

2 5

not my favorite.

  • Familiarity: I've used it several times

these are the smallest biner on the market as far as I know, but not the lightest, which is why these are much less than awesome. If you have bigger hands these are fumbly and hard to work with, which would be ok if they were also the lightest biner in the world. but they are not. there is a significant difference between these and the CAMP nano 23. I much prefer the CAMP biner, its bigger and easier to clip and 2 grams lighter, right now the description is wrong, it has them listed at 23 grams but they are in fact 25 grams.

so unless you need a tiny biner for some reason or you have really small hands i would not get this one.

5 5

Great utility biner

  • Familiarity: I've used it once or twice and have initial impressions

Got this little guy to leave on my belay jacket for a chilly multi-pitch in Linville Gorge, NC. Feels great with clean action. I like that it is so small because and goes right in the pocket of my jacket while I wear it.

5 5

Great, I love it.

  • Familiarity: I've used it several times

I use a black mini to rack my black tri-cam. Saves weight, carries nice, feels like other regular sized carabiners to me. Wish they had more colors.

3 5

only for weight junkies

  • Familiarity: I've used it several times

extrremly small and light but not really confortable to use with gloves or in hard trad climbing moves where you have to grab quiclky the cam form your harnes
if you are not worried about that. these are awesome

Responded on

Well said. Even if you are a weight junkie, pretty sure the CAMP mini biners are lighter, and are a bit bigger/user friendly. I think these missed the mark.

5 5

Small but mighty!

I bought these as utility biners, for racking or whatever else... and I love them! The gate action feels great, not like a "toy" at all. But they are SMALL, duh, that's why they are called "mini." You can't load them up with too many straps/ropes because things will get crowded. They aren't mean to quick draws, etc... and would be hard to clip, but they could work for a lot of things in a pinch.

5 5

Excellent and powerful little biner

  • Familiarity: I've put it through the wringer

I really like how small it is. I used it for everything before I started rock climbing, including camera holder and keychain. It is very lightweight and small but very resistant. For rock climbing I use it mainly to hold my prussik accessory cord when rapelling.

Showing the size...

Showing the size...

As you can see, they get a little crowed with doubled slings and with two cams per biner. I know, not what they were designed for, this is simply a demonstration of size.

3 5

Well made, a little small....

Purchased a few of these to rack some of my TCU's and Flex cams. They seem very solid and the gate is smooth. I have no problem getting them off and on a gear loop. However, the problem lies in doubled/extendable slings. These are just too small. There is no way I'd be fiddling to extend a sling when the juice is draining. No big deal, they were designed for metolius' single slings, hands down. Lastly, the price seems pretty steep to me. I will update as I put more use on them this summer. The jury is still out on whether or not I want mini-biners on my rack.

Responded on

I would retort by saying I absolutely can comment on the functionality of the biner. There certainly is such a thing as "too small" in a mini biner. When you shave weight you often lose some functionality. Sometimes, you lose far too much functionality for the weight shavings to be worth it. That is the case with this biner, in my experience. I feel that CAMP has done a MUCH better job with their mini biners. Hence.... 3 starts. I stand by that rating.

5 5


I got tired of my fake-biner keychain breaking, so I started looking for a tiny legit one. This was perfect! Very small design but you still have a full working biner at your side, you know, just in case you need to tie your shoe laces together and repel from a burning building after saving some old lady's cat or something.

5 5

Great for hammocks

Keychain jokes aside, these do make great biners for random utility purposes like hanging your hammock.

Great for hammocks
Responded on

They are perfect for hammocks! They can hold a nut tool on a leash. They are strong and well made. Yes they are small. They were designed that way and are advertised as "mini". Everybody has different needs and preferences. It is up to the buyer's/user's Imagination to put them to use. If climbing, yes - they have their limitations just like everything else. Non-climbing/non-critical use - go wild! They are built like mini-hummers! indoorsy has got it 100% right - & btw, thanks for your post!

5 5

Load up on them, great for everything

  • Gender: Male
  • Familiarity: I've put it through the wringer

Small, strong, light, great for so many uses, like lightening and shrinking your alpine rack, pack biners, shoe biners on your harness, anchors, etc...I don't love them for clipping the rope into while leading, but utility wise, they are awesome.

5 5

FS Mini

great for racking, metolius does color them to match all 8 master cams, but the grey and purple are harder to find. they could work for quickdraws, but for sport climbing the weight savings wouldn't justify the potential for clipping difficulties as they're quite small. for racking cams, 5 stars.

4 5

Testing the F.S. ~_~

I picked up one of these to give it a try and check out one of the "micro" 'biners comparable to the nano and mosses. Like everyone has said, this thing is smurf sized. .

After a bit of testing I'm thoroughly impressed by the snappy and tight gate action, feel in the hand, ease of clipping, weight, and even the bright color. Purple ended up being a Magenta/Pink color lol, but whatever. Also, has a texture comparable to bead blasting.

While the gate opening of this thing is tiny ( 18mm ) I really like the feel in the hand and it's not incredibly hard to clip it cause you can wrap your whole hand around it with ease. I'm sure the more you practice with it the better you'd get, but I prefer the Inferno wiregate for the size bonus and larger gate opening. They're also the same price ;]

With the mini F.S.'s tiny gate opening and large hook nose it can be a bit troublesome to unclip from the harness, pro, rope, and/or wall. Practice makes perfect. .

Major Axis Strength: 22 kN
Minor Axis Strength: 7 kN
Open Gate Strength: 8 kN