I bought one here ($10.90) to put me over the $50 mark to get the free shipping, and I don't regret it. The gate opens smoothly and locks smoothly. It is a good size and is easy to use with one hand. It doesn't snag on anything. Fairly light, and a great price. Get one for everyone you know.

It's a locking biner. It does the job, but I haven't been all that impressed with the locking mechanism. Don't get me wrong, it stays locked, but I sometimes have a problem getting the thread started. Seems a bit loose at times and shifts off the threads. It's never failed, or came unlocked so I can't complain too much.

I use this biner as my primary belaying biner. I use the Black Diamond Alpine harness so I need a large biner that will easily fit around the waist belt as well as the "crotch" loop. Smaller biners are sometimes a hassle to get around this material and still mate with a belaying device. This biner is the perfect size and the lock works easily and quickly. The color does wear fast but I'm really not too concerned with the color of my hardware, but more with the general durability. I'm completely confident in this biner.

I got 6 of these biners to do everything from set up anchors and top ropes to belaying and rapelling. They worked well for all applications. My favorite part is that they never get snagged on the rope or webbing. One of them got scratched more than I would expect when I was climbing over the edge at the top of a cliff. I'm not sure if this is normal, and just showed up more because they are orange so the silver scratches showing through stands out more? I hope this doesn't affect the safety of these biners, maybe someone could tell me. What I was doing was nothing but normal use. PS.... THEY ARE REALLY LIGHT!!!

Bought a couple of these to replace the airlocks I lost. Used them for a couple of weeks now and they work as you would expect for a Black Diamond biner. Decent amount of working room inside the gate for trad belays using a cordalette without being too big. The screw gate works smoothly and doesn't bind on the gate. What else can you say, good biner at a good price.

Great locker for setting up anchors: stays locked (as much as can be expected), clips easily and is plenty big to accommodate other ‘biners or haul system.

I had the same thing happen as Paul P did, with the scratching. I asked BD and they said they've noticed that too, but it's just the contrast of the paint. Other than that, these biners are fantastic. They are huge enough to be used as long-term toprope biners (on anchor draws) because there's so much metal that it'll never wear out (well not never, but... not for a really long time). I use one on my ATC for rappelling too for the same reason. Also, the hugeness disperses heat really well on fast rappels. The only downside is that they won't fit through a link at the middle of a chain, so if you have them on your daisy chains your options will be a bit limited. For any other purpose, you'd be a fool to buy anything else.

It simply works. It is easy to screw and unscrew. I use this with an ATC-XP and both work well together. It is large so it's easy to slip into the harness and everything.

I got a set of these 'biners for christmas, and I love 'em. They're so easy to unscrew when clipping in or out. Let's just say I wouldn't trust my safety with anything less.

This is a nice set up. The locking biner is nice and sturdy. The ATC-XP is a good belay device but tricking when using thicker ropes.

Nice design, doesn't get snagged ever when clipping or unclipping. Friendly shape to all hardware too.

This carabiner has a nice wide opening, a clean nose, and the screwgate will keep you on your toes, so you don't get lazy while belaying; and they're probably more safe anyway.

I love using this for people starting out because I can use a small opening locker but new people just love how wide this thing can open to put on their harness for belay. Always a smooth twist on the locker too, even after 5 years of use.

I use a handful of these for cordellettes because they open up so wide and the keylock doesn't get caught on things. Makes for really quick anchor building at the top of the climb. These have a really smooth action and lock.

Safety is always my priority and the screwgate is a must.

The rocklock is a good 'beiner. It has good action, a wide gate, and a keylock. This combination is great for a belay 'beiner, or for use in an anchor.

it's very easy to use and the screwgate makes it incredibly safe too. this Carabiner is very wide so it's easy to put on your harness.

I BOUGHT ONE BECAUSE THEY ARE FAIRLY CHEAP. IT IS A LARGER SIZE SO IT IS NOT AS HARD TO USE.

Nothing fancy, easy to use, safe and gets the job done. I never second guess it and never had problems with it loosening... bomber goodness. Everyone needs a locking carabiner..so get it!