This is a very reliable piece of equipment. The triact lock is positive and easy to operate with full finger gloves. Ball lock is a little more difficult and not as "robust" in my opinion. Twist lock is cool with marking to identify if locked or not. Great LOCKING Carabiner.

I have got to say, out of all the biners I've own or used over the years, this is the quickest and easiest one I've seen. The Ball-Lock is great! Only having to twist about 25 degrees, rather then the 45 on any other twist lock, means I can get it open even at odd angle where I don't have an ideal grip. Something that can be more then a little annoying when you finally topped that 70 foot lead. Plus the simplicity of just having to visually check for a green dot to know that the gate is locked is a real turn on for me.

It is really tough and larger than my other carabiners... It has a good lock w/ a red warning strip shown if its unlocked.. a good warning strip for safety purposes...Its just heavier than my other carabiners.. an additional weight load to my stuff if you carry to many of them but in terms of safety it worth it.

I´m a Rescue Firefighter and this carabiner is excellent for many applications: Anchoring, Pulleys, Descender, Ascender... I also do a little rock climbing and I find it quite light for a piece of equipment that safe. So gear up and take it to the top.

I have a couple of these with the Tri-act gate, and find them very useful for certain things. I wouldn't use mine with a tube device or for rigging anchors (though I'm sure they would work fine), but they work great for a GriGri and are nice because they always stay locked and are easy to visually confirm. Also, I use one on a Mini-Traxion for solo top rope, which works well because (again) it stays locked when moving around with it, and the pulley has no trouble swinging around on the biner to load it in the proper orientation in case I fall on it.

I went with the screw locking version. They are cheaper and simpler, which usually means they will last longer. At my local gym all top ropes are set up with the orange self locking biners and some of them are sticking and can be a pain to get on and off. Maybe some lube would fix that. But since I'm not using mine in the gym where I am bouncing between top rope lines every 2 minutes I went with the screw locking. LOVE THEM.

I find this biner a bit awkward. After using it several times, it's still taking me two hands to get it to open, but I feel confident that I'll get used to it and I consider it safer than the screw versions which I can be prone to forget about closing. So, works for me.

Excellent biner. I also like the red safety stripe. The Am'D fits tight into my Petzl Pirana Descender making it feel like one unit. Great price for a quality carabiner.

The Ball Lock is a nice little invention. The pic here on the site makes the lock barrel look plastic but it is aluminum. A quick glance and as long as you see green you know it's locked. Nice smooth one handed operation too. I used a piece of rope and tangled it around the gate every which way I could but I could not get the rope to move the lock. Time will tell but I don't see any way this could come open accidentally.

If there is one locking biner to end all, this is it! My go to for anything that needs to be bomber without giving it a second thought. This or the William are always on my harness for anchoring. The gate action, after years of use are still like new. I would buy these over any other large locking 'biners anyday.

This is great cuz you never have to worry about your belayer not locking the gate. I find it a little annoying - you have to pull the screw up, twist it, then you can open the gate. But it is safe! And quite large and durable.

I have a couple of these carabiners in a Triact-lock. The lock is secure, yet quick and easy to open one-handed. They are a little more money than some other carabiners, but still pretty good for the price.

i love the am'd carabiners. i recently bought this auto locking am'd for my reverso 3 and found that it is a not worth the extra five dollars. it get locked up about halfway open on me very often, making the ease of the one hand operation not so easy. otherwise i love that it locks automatically, makes it easy to perform the once over before climbing.

this is a fantastic biner. it allows room for error, especially when building anchors. one hand operation makes setup super quick, so you get the maximum number of climbs in on that well-earned saturday. just be sure your climbing buddy understands the whole ball-lock concept before he goes up to clean the anchor :).

I dig it, just ordered some more. It's quicker than the screw and safer than most biners.

Can't stop playing with the gate! It's so much fun to try to open it with one hand because you need to lift and turn it. Also looks very cool... Oh and it works fine :P

works well, fast and easy to use. Good price also.

Works well and priced right no matter what you using it for they are always nice to have handy in a pinch... pick one up

For the price the best beanier I have used on the climbing wall at my waterpark climbing wall. Doesn't corroide under the chlorine in the water.

Petzl Am'D Locking Carabiner is a must for any climber

I'm just getting into climbing & the Petzl Am'D Locking Carabiner is great for me: I never have to worry that my carabiner is not locked! I bought the Triact-Lock Auto Lock version. Ya know, better safe than sorry, as Mom used to say...