Thin gauge wire. Not for heavy pieces.
921143
The color is good, gloss black finish, but they did not specify wire gauge. Regular pins are 20-21 gauge, and these are 26 at best. This means they are bendable with your fingers, so they should be used for earring findings that bear little to no weight or pull stress like a necklace or bracelet would.
473102
Wire is functional but way too thin. It's a cheap Chinese import.  The magnetic relays work okay.
4328669
Worked for my small project but might be thin for many projects.
3938097
This is a nice kit for the money.  Its has some nice useful components. I'm not a wire expert but the actual red power wire size may be more of a 14 AWG instead of 10 gauge. I have a spool of 12 AWG and the wire is very firm and hard to bend. This wire is pretty flimsy and easy to bend and seems a fraction smaller in diameter with a very soft plastic cover.  Check out the picture below showing my 12 AWG spool and the 10 Gauge in the kit. It should still work for my application as I only need to fuse 20 amps with it.  The fuse came with a 50 amp fuse but I would be very careful pulling 30 amps through the full 15 feet of this wire.
3102522
Not substantial. Usable for the job but flimsy.
3482241
Alright, it was dumb of me to purchase this wire for a craft project - I foolishly assumed it would be malleable, but it is actually quite stiff. If you're looking for 12gauge craft wire, use aluminum if you want it to be workable! This applies if you're trying to make those "name hangers" all over Pinterest and Etsy...

The packaging it came in was pretty damaged. I could have returned this item, but shipping would have cost me more than the item was worth, so I kept it for random house projects.
2580970
Smallest gauge wire ever but it works. I hope I don't have issues with fire later.
2795826
Wire is very weak; the top layer gets cut easily. Its cheap  at the same time but product is cheap too. I should have spend more and looked for a better thicker stronger cat 5E.
3118996
I bought this for the purpose of hanging some small banner-like decorations as well as string lights for an indoor party.
It did the job but the hooks are very very small.
This clip is designed ONLY for hanging string and thin wires. Also not used for heavy objects.

If you end up putting too much weight on these, it can rip off your wall and actually end up chipping the paint... ;(

So be careful but I will order these again if I need to decorate indoors!! :)
2055017
my fault, didn't expect them to be on the thin side.  would have liked a heavier gauge
1246250
Although they work fine, they aren't as high guage wire as I would have thought, probably not for heavy duty usage.
302148
steel is light gauge.  I had to reinforce it with re-bar hammered into the ground with wire cable wrapped around the pole due to the thin steel hanger bending.
1967614
Very thin metal wire.  Candle holder was badly bent and one was broken off.  Product was over priced.  Sadly, I had to return it.
602243
Very thin...no way should be classified "utility grade".
4873088
Metal threads piece snapped just as others had indicated. It's not made for use if you're going to move a lot. Weak metal.
2942551
I was surprised at how thin the copper wire is. It's not much thicker than a toothpick. It makes it a little difficult stringing it out because it's so fragile.

The lights are strictly for aesthetics, and they really are adorable for that purpose, but they're not for actually illuminating an area. We bought the item to put along an elevated walkway so that a person could see his way in the dark.  These lights are not designed for that purpose. So we'll likely buy something else.
2522139
Really thin wire - I'd say its about half as thick as it should be for the advertised gauge. That said - its DIRT CHEAP and for it worked for my relatively low-power sub.