This is what a carabiner should be. Smooth, locks/unlocks easy, and is super lightweight. Will definitely be using again.

I mainly used these to set up anchors and my PAS. The screwgate motion is smooth/easy to turn and the overall body of the carabiner is light. I used them for around a month of climbing every weekend, and small signs wear are present.

These carabiners are great. I purchased them on recommendation from an experienced climber friend as I was just learning, and I found them to be really useful for several applications. The screwgate action is very smooth and they are light and versatile. The longer I've spent climbing, the more nuanced I've gotten about things I prefer in my climbing gear, and now I lean more towards Petzl Spirits or DMM Shadows for small, light locking carabiners. These, however, do the job very well.

Lightweight, which counts for a lot.

Some downsides:
- Less durable. I set up a toprope with them only twice, and saw much more wear than I was expecting. Not really its ideal use case. I use this mostly for cloving in at belay, etc for multipitch and alpine stuff.
- Personal preference on the screwgate. It's nicely studded and easy to turn, especially with gloves. But it's got sharp edges which tend to catch on webbing and whatnot, so can be fiddly. Would prefer some roundover.

I've replaced all my lockers with the Photon's due to how light they are, how durable they are and the compact size. I use these for everything from a belay biner to building anchors. The best of the best!

This carabiner is great for multi-pitch climbing. I have three that I use for building anchors. They are very light and the clean nose design is nice to prevent snags. The locking action is very smooth and the construction is very nice.