Clog 2100 Biners?

Clog 2100 Wales Biner
I have no idea how old these are i got them when i bought a bunch of cams from a guy. They look pretty old and they are rated to 2100Kg do you think they are safe to climb on, they are aluminum and i don't see any visible cracks or pock marks in the metal, the gate is smooth and clean and springs shut perfectly.

To put a strength rating in units of mass is a bit odd. Are you sure they're good for 2100kg, or are you assuming that because they say 2100 in the name? It could be 2100 Newtons, or 2.1kN, which is no bueno for climbing.

On the other hand, if they really are rated to 2100kg, the math is pretty easy:

2100kg * 9.81m/s^2 (accel. due to gravity) = 20.6kN. About the strength of a modern 'biner.

It's obviously up to you whether you use them or not--hope you're careful about your decision and don't make any assumptions!

-Scott

You could call Wild Country and ask them:

wildcountry.com/products/cl…

Or you could read this article, then ask DMM (they mention Clog 2000 carabiners):

dmmclimbing.com/documents/r…

I've got a bunch of these laying around. I used them for years without a problem.

That's 2100 kg. I have a few Clogs, including at least one like yours. Bought them in the late 70's and maybe into the early 80's. There's no reason not to keep using them.

Scott Scharfenberg wrote:To put a strength rating in units of mass is a bit odd.

It's not mass. Kilogram-force (kgf) is a common unit of force just like pound-force. It's just rare to see on climbing gear where kN is the norm.

A lot of older biners used to use a kg rating. If I remember right I had a bunch of old chouinard light d's and ovals that had a kn rating these were in the 80's
Dallen

Thanks for all the info!

In the good old days in the U.K. climbing gear was made to a British Standard and things had a breaking strength so they got rated in lbs then later kg, as part of the metrication process required due to joining the EU the ratings were changed to a force they could withstand so moved over to the kN.
Those are a good, strong karabiner and I´ve still a few on my rack for carrying nuts and stuff.