Some of the fiber optic strands do not carry the ...
595086
Some of the fiber optic strands do not carry the light due to being bent during shipment. Overall a very cute decoration.
3223562
We don't have tons and tons of lights, just about 8 strands or so. It works for those just fine. Haven't tried anything heavy duty.
4721844
Only OK quality.  I had a few loose some fibers.
61949
Some don't thread easily which is kind of important since you can't hold the female end very firmly at all. Other then that they look good
3196306
base very light ,fibers tip it over..it must be propped up with something heavy., or it will just fall over and the fibers fall out of the base
3891429
First, let me say that these lights strands are constructed with high quality material and look great. I ordered two strands, one of which had a faulty light socket. I had to return the faulty strand due to lack of response from the company.
4480359
I ordered 3 of these optical cords and two of them are in great condition.  The 3rd cord had a loose end, but it still worked, it just didn't connect as tight as the others.  The mesh helps prevent crushing and tangling which it nice, although I ordered a 12 foot cord a few years ago from the same manufacture and it seems they down graded from metal silver ends to plastic, not a big deal just kinda disappointing.
4823170
These are ok for the price but you sometimes have to move them around a bit to make a good connection.
2048932
This connector works well, but is easily lost. Some optical cables come with an end cover that is attached to the cable to prevent loss. That would be a nice addition for minimal cost increase.
2213012
They are cool and are a good idea, but the connection isn't the tightest.  Fixed it by bending the leads down inside of the clasps.
962407
They are greatly built but they are very long compared to my previous extenders. You can see them most of the time (I use a Pratt knot) due to how long it is.
2276030
Some of the pieces have connection points that are off-center and will not connect to other pieces.  Fixable with a router or jigsaw, but I expect the QA to catch these issues prior to packaging.
3742221
Package of two (4.5') strands allowed for use in two center pieces.
3708755
The supplied power cable does not fit in the fixture. Both the fixture and the power cable have female connections.
4796302
Not a perfect match for my project, but will work fine.  It's hard to distinguish the color of the wire on the Internet.
3521203
An old book that nowadays may not contain all advances in optical fiber sensing. Nonetheless, it still provides a good introduction to students who are beginning to work in photonics.
950360
You get a lot for the price but there are occasionally flaw. The shaft is too long on some and do not allow the cover on the controller to close.