D-shaped Aluminum Screw Carabiner with Key Ring -- Assorted Colors (Set of 6) by AGPtek

The green one is screwed into the "locked" position.
The black one is "unlocked".

Typically, my wife and i put our keys on a carabiner. She likes to hook hers over a loop on her purse, I sometimes like to put mine on a belt loop.

Well, I'd like to hook them on a belt loop but I am afraid that I am going to lose them by bumping into something and popping open the carabiner for just a second. These carabiners directly address that issue by including a little screw to lock the carabiner shut. This is pretty similar to the system that some of the real carabiners that mountain climbers use to safely lock themselves in.

By the way, just to make it clear, there is a warning on these carabiners to never use these to climb with. They are completely made out of an aluminium alloy but they are clearly not to be used that way. I don't know who would try that, but you are warned - so be careful!

Each carabiner comes with a key ring as well. The product description says that it comes in assorted colors. My set's colors were: orange, green, electric blue, black, pink and red.

These would be great on a hike to securely attach a water bottle or a light to a backpack. Or, if you're just going to hang out with some friends you could still use one of these to attach a Bluetooth speaker to that backpack.

I rate these carabiners 5 stars out of 5.

As of the time of this review, this set of 6 carbiners cost $8.99 on Amazon.com. Click here to check for current pricing: D-shaped Aluminum Screw Carabiner with Key Ring -- Assorted Colors (Set of 6) by AGPtek