For small pieces of black rubbery material, they do the job
928849
Nice simple effective product, placed them under my stand for my computer gear and noticed the effects straight away - vibration from the floor. Would use this product again.
3029790
These are not the greatest quality, however they worked. I had a couple springs that didn't work so those rings couldn't be used.  They also appear to be black and not necessarily oil rubbed bronze.  If you had heavy curtain panels I'm not sure these would hold them, as they are very small and fragile.  For the price, I felt like I got what I paid for.
3134606
I bought and used these to aid me in removing pieces of dashboard when I was replacing my car's audio head unit and climate controls. They did their job. They are not particularly sturdy, but it is not as though I will be taking apart the dash frequently. These are well worth it if you are doing such projects once in a while.
3164655
Not much to say.......they're good rubber bands.
727531
These are short, but sturdy and rubbery. Flexible. Just wish they came a little longer, like 1ft. I like them for plugging into the computer. Saves a lot of messy cord management.
4065006
These really do work and add a GOOD grib on the back of a "naked" phone or slippery phone case.  Just remember, this particular set is black so will show up on colored cases - the maker has some clear(er) ones, though.  I think these are a bit high priced for what they are, but again, they do work.  The skinniest strip ones however, will NOT stay stuck to the sides of a phone. The larger flatter ones stay secure on the back.
3594301
Didn't realize these would be so tiny!! They work though
2858338
seems to work as intended, wish they were just a little bit bigger, and offered in different color options, and maybe textured instead of smooth, otherwise it does the job
1542180
These are fine except make sure you know they're small and that they can pull off of the magnet somewhat easily. Good for general use tho
4099988
The don't seem to be made of the strongest plastic, but they do the job for medium-duty applications.
1492227
These things are... OK, they stick pretty well to just about anything, however they are VERY small, to the point where, I don't think you can really run any wire, aside from maybe 24 gauge speaker wire, through them.

I purchased them to help organize my cables in my home office (mostly USB cables), but the cables were too thick and heavy, and stayed stuck to the clips, eventually just ripping the clips from their surfaces.

I will say that they hold is really well, for smaller applications, and I'd definitely recommend if you're using them to secure lightweight objects, or cables.
285662
I had hoped they would have fit a little more snug than they do, but it works
892931
These things are smaller than I thought they would be but they were cheap and will do in a pinch.
1274701
A little  smaller than expected but gets the job done.
877787
Handy for on the fly tightening or repairs, but be warned they are very short.
3250370
These are really cheap, but they get the job done.
4354091
These are a little small, as some reviewers noted.