Review (1/5): NOT actually silicone lined!!
BE WARNED, THESE ARE NOT SILICONE LINED - contrary to what the listing says!!
I ended up purchasing these twice - when the first ones arrived and clearly did not have any silicone, I figured maybe they'd just made an error. Needing a product that was available with Prime, but finding extremely limited choices for this particular item, I ended up (stupidly) just trying again, hoping they'd get it right. They didn't.
I started to use these beads anyway, but am VERY glad I stopped after just a dozen strands or so! Because they don't have the silicone lining to protect the hair (and decrease slip) you're literally using needlenosed pliers to smash a tiny piece of unfinished metal in half, tightly around an already very tiny strand of your own hair, WITH another piece of metal in the middle! It's like a teeny tiny little car crash with your hair in the middle! If I'd tried to keep these things in for any length of time, I have no doubt they would have done serious damage. Just trying to remove the few I applied was extremely difficult and anxiety-inducing; none of the beads actually bent back in the opposite direction, like what you experience on a larger scale with the micro beads. When I could finally get each bead positioned to "un-crimp" it (getting it to stop slipping from between the pliers was no easy task) the only way they released was because they broke into tiny pieces, many took strands of my hair with them.
This is a long review for what probably seems like a totally inconsequential item, but I'm sure I'm not the only person who has made this mistake because they didn't know. Hopefully this will help prevent another DIY-er from having to deal with the same headache, and damage!