Just noticed this kickstarter, seriously tempted to back this one.
Edit: I lasted about 3 minutes, backed.
My first thought; would the spring pinch you as the hinge opens?
I quite like the C10 and C20 designs but they don’t seem as handy as the Niteize S-Biner. Different applications I expect.
My first thought was "what a stupid design", especially the first one. When something hangs from it the spring will be compressed and pull the latch open. It doesn't look all that trustworthy. I will give it kudos for the novel design at least. I just don't see any advantage to it from a traditional carabiner. None at all.
This design looks far more practical. At least they do say that all their caribiners are designed for low weight use like a set of keys and suck. The design of this one, with minimal gap between the spring and body, means that the latch won't get pulled open and the spring has a far less chance of getting deformed or twisted.
Yeah seems a bit form over function, but I like the idea. Giving the C10 a try. Already have a few niteize carabiners, we’ll see how it compares haha.
Definitely for the titanium fans then.
What are climbing-grade carabiners made from?
Nice! I like the C10 the most out of all of them.
steel or aluminum
OSHA requires steel, and that’s all I ever used in the Army.
aluminum, dear god, aluminum will always fail, just a matter of when
Thanks, dthrckt!
Bort, that made me shudder. Just imagine it failing at the worst possible time!
the same could be said of any metal subjected to stress, but I suppose I should have said aluminum alloy.
I have the impression that most recreational climbers use aluminum (and so do jet planes). All petzl carabiners are 7000 series aluminum.
one of my manufacturing processes classes started with the following
how many of you have an aluminum bicycle post [a few hands go up]
i hate to tell you this but it will eventually crack, aluminum has a fatigue life and will always eventually fail, it must be designed to last at least the expected lifecycle of the product.
Climbing is a lot of loading and unloading with uncalculated forces over an undetermined amount of time, and without an idea of the forces an aluminum part will be subjected to in my opinion it is irresponsible and dangerous to make a climbing carabiner with it.
from wikipedia (fatigue life)
A little knowledge…… Correctly spec’d, nothing wrong with aluminium
Everytime I’ve been climbing out pf the boulder wall, I’ve been using alu carabiners. And what i really mean is that not just me, but 99% of climbers have been using them for many many years. Not only carabiners, but friends, and other gear are made normally of aluminum, and not just because of the weight. As Jeansy says, if you’re using the right ones (that excludes all the suicidal climbing labelled in dealextreme) there’s not problem at all.
perhaps my opinion is incorrect and they are over engineered enough, i still personally wouldn’t use it, but i will defer to your greater experience
Minimuim rating is 20Knm for a closed climbing carabiner. I’ve towed cars with an old carabiner. I don’t use it for climbing anymore but I’d bet it would be fine.
I also have a friend with a ~20 year old GT mountain bike that gets a hammering, it’s showing no sign of failing 
keep in mind fatigue life in aluminum is cumulative, and parts can be designed with more material for longer life
the fact a 20 year old mountain bike has no visible damage means it was purposely designed to last at least this long
It's a nice idea, but the edges are too sharp, there are no capacity ratings, and weights of the carabiners are not provided. That's too bad. I could use good, small and strong carabiners.
I’m torn. I have an obsession with titanium, but these seem over designed and ugly. I understand the design, I know that smaller titanium clips that use the S-Biner style of latch have issues with the latch falling apart. I’d rather see some sort of spring loaded locking collar that you have to manually close.
By the way, thanks for posting. 