Nice 'biner for the cost, and it locks too!
346363
Trying to keep dogs from getting into their food container. They were smart enough to figure out the locks we've used for more than 10 years, so, carabiner it is! Guess what? They haven't figured out how to undo these!! Having the locking mechanism was just icing on the cake.
1817526
It looks a lot like a Petzl Attache, but as has been mentioned, the screw threads are too fine. I can unlock a similar round-bar Attache (yes, more expensive) or Rocklock (barely more expensive) with a flick or three. This thing needs like 8 flicks to undo. Maybe that's ok for a backup biner, but no way I'm using them for rappel device or autoblock, which I'm often clipping out of in pools of cold water that I need to quickly exit. It's worth the extra buck or two to move up to Rocklocks.
3495256
It locks.  It's a box.  It does what I bought it to do.  I don't do anything fancy.  I use it to collect payment for a recovery drink I sell in the gym.  Easy peasy.
4839019
I don't know why I ever thought locking biners were a good idea. They absolutely are not. There's no spring in the clips so every time I need to release my items, I'd have to unlock and then open the clips manually.
483486
Not a bad value for the money. It should suffice for light use BUT I'd caution anyone that anticipates heavy use that the "pegboard" is a relatively soft molded plastic. As such the fit of the bins has to be fairly tight to support the bin. this makes putting the bins on & taking them off a pretty clumsy process. I don't think I'll load the bins very heavily either.
1237023
This is an EXTREMELY solid locking biner without any of the stupid and annoying idiot-proof crap you find on non-screwgate locking biners.

The threads are cut clean as well so you don't get that nails-on-a-chalkboard effect you get with some screw gate biners. Additionally the gate pivots like it's on machined bearings rather than a rivet - there is no play whatsoever. It's just super solid.

I have at least 5 different locking biners - when I get more large locking biners I will only buy these.
3403351
Picked this bad boy up as a soon needed replacement for my original locking oval biner (See pic of new replacement and existing one).

This locking oval helped complete my two sets of Quickdraw anchors (with the three-pack of DMM's locking ovals; blue, green, red) for my sport climbing adventures. Purchased this biner about a year and half ago and still got some life left in them.

A little bit of tidbit information about its additional strengths:
Load capacity in the longitudinal direction = 27kN
Load capacity in the cross direction = 12 kN
Load capacity in the longitudinal direction with open gate = 7kN

I used to use the regular biners that came with the original quickdraws for top rope, but soon found out they wore through very fast (about a year). This biner lasts and last for multiple outings at the crag. Climb on!
2130355
I love these bins for traveling (RV/camping) storage.  This size is good for toiletries, accessories, etc.  But I did notice that the one most recently ordered the handle does not "lock" very well.  Stays up, but it's much looser than the other side and not at all like the exact same bin purchased previously.  Doesn't hamper keeping contents in, but definitely not as "airtight" as the others.
2833223
Great stackable storage for small parts.  I own several that I use for the multitude of drone parts that one accumulated over time.  Positive locking.  Once locked (closed) the bins, which are removable, are completely captured such that their contents cannot spill out.
1572674
This is a really nice rotating organizer for the price.
3757912
This is exactly what I needed to secure a large bin on a trailer platform for a camping trip. I still had a few feet of straps left, making me spend extra time securing the loose straps so they don't flap around in the wind or get caught. Two stacked bins would've been also fine.

A couple of notes about using these:
1. When tightening, take out as much slack as possible before ratcheting for optimal tightness by the end.
2. To release the straps, there are two spring-loaded mechanisms. The first is shown in the video and the paper instruction: squeeze the release lever on the top of the handle to open it 180-degrees. The second is not shown anywhere, and that's to squeeze another similar spring-loaded release lever on the bottom part of the metal part to free the strap if needed.

Do allow some time to strap down because it's not as easy as hooking up some bungee cords. You'll get better and faster as you use it more often.

(Note: I attached a photo, and we discussed how the hooks should be hooked. My travel partner decided under, but I think it should go over. The cargo stayed on without any issues, but next time, I'm going to insist on going over.)
3199190
Great size and the lid shuts nicely.  If they had removable bin inserts, it would be even better!  Good product for the price.
938772
Got the Petzl Via Ferrata lanyard, and wanted a matching, "hanging biner" for the loop they provide. These all work great, lock securely, and are easily manipulated with a single hand. I actually like the plastic (mine feels more like lightweight metal?) sleeve the other reviewer mentions as it helps avoid snags (and is on no way load bearing). Safe climbing.
4700041
Holds enough storage space for me, and the simple design works well. It is a bit hard to get the bit in and out, but it plugs into the computer very easily as the bit locks forward. It is secured backwards the same way, and is a bit hard to unsecure. Overall, I would recommend this product. It is very good for the $6-7 price it was bought at.
3439509
Updated:

The lock is still working, but I've been having an issue with the number dials. After chronic usage, they seem to spin too easily; if I want to spin one of the dials, I need to hold the others in place to prevent them from spinning. Defect?

--- initial review ---
Great lock for the gym.

Was easy to change the combo to my own and works well the multiple times I open close it a week.
398819
It gets the job done and locks up right.  Minus two stars because of the thin cast lever. That will be the part that breaks.
4723498
Works fine, and I like the bin feature.  it seems to take more and run longer than the specifications suggested.  Only one problem--the credit card slot sends out credit cards in long, easily readable strips.