Never a question of whether it is locked or not. Very dependable. Highly recommended.

Light, strong, and I know it's locked.

Nice compact design that is easy on your rope over and over for belays and rappels. The old design got updated with the key nose for ease of use, which is great. This is a nice alternative to the standard mega biners generally used with an ATC/ super 8.

Its small, does its job well, and is easy to lock/unlock. Never had a problem with sticking and wears well, especially for use with belay device. Highly recommended.

My designated abuse biners. If I take friends out for a little TR, these are the best. Strong, easy to use with a single cold or dirty hand, and long-lasting.

i love these things for setting up anchors, light and easy to clean.

Great durable biner that's easy to use and has plenty of room (they use the term "mini" very loosely). Great biner for rappelling and top roping. You always know when it's locked and it's lightweight.

I use mine on my PAS and for belaying. They have alot of room in them for rappeling and belaying and the keylock nose never snags on webbing. They are perfect. highly recommeded.

This thing works perfectly and looks sexy while it's at it.

These locking biners are perfect for belay and repelling. They are strong and leave you plenty of room to work with. Some people are surprised of how big they are but I think they are perfect, plenty of room.

I trust my life to these.

if you want a locking biner that is a bit smaller and lighter but can still handle two ropes with ease this is for you. angle or the top gives plenty of surface and room for rope but isnt overly bulky.

These biners are great. They say "mini," but have such a large gate opening and shelve space that you would never notice. The Pearbiners are great for belays with plenty of room to clip in multiple items. Their smooth axis makes them great for the traditional munter hitch belays.

I have only used this ‘biner to lead belay in the gym and it worked fine. I am used to a much larger ‘biner, but I think for sport climbing everything will be just fine. It has a good shape.

Nice and secure, which is extra confidence when you are an occasional climber. Works well with my atc-xp.

Great biners, I have 10 of them now. Use them for everything. I wouldnt call them mini either, they are full-size as far as im concerned!

Not mini at all, very much full size and much larger than some of the other black diamond ones out there. Very strong (obviously), looks great and works perfectly. I've got my heart set on using these only!

a bit small for me, i like the quicksilver. i do anchor work and multi- so this just doesn't get used at much. for using with an ATC it is ideal, but its a bit hard to hook up being so small.

This isn't fancy, but it does the job, it is lighweight and great for belaying and rappelling on sport routes.

Easy use. After about the third pool I rappelled into screw lock... a little stiff but still functioned like it was supposed to.