The only unreliable cable ties I've used in 45 years
Note that I've been using cable ties for about 45 years, and never seen the unreliability of the ones from Monoprice. I'm old enough to have started building electronic stuff before cable ties existed, using waxed string.
I suddenly started encountering cable ties that broke for no reason, but didn't know which brand I was using out of my stock until my second order from Monoprice. Then I kept track of them.
Some just break for no apparent reason, just while wrapping them into a loop.
Frequently, one is putting a cable tie in a tight, hard to reach, area. It is a struggle to wrap around the object and get the end inserted. Then the darn thing just goes POP before one even puts pressure on it, and one has to start all over again. At that time, Monoprice gets cursed soundly and deservedly.
Other times, the cable tie is used to keep items tucked away from possible snags or abrasion. For 45 years, I have never seen a cable tie fail after being set. EXCEPT MONOPRICE. For me, they just aren't worth messing with.
My best guess is that the manufacturer of the raw nylon that is molded into the cable ties has lots of impurities that cause weak and brittle spots. Visual inspection show nothing.
These customer complaints have been going on for years. The Monoprice Product Management Team has not bothered changing suppliers or fixing the problem.
These cable ties are very cost effective where they are easy to install and you don't care if a few go to pieces later.
CONS: Totally unacceptable quality unless all you need is cheap
The cable ties from monoprice are about the only thing that isn't high quality. The plastic used in these actually becomes brittle when exposed to dry air for a couple days. If i don't use a pack up fast enough, i end up throwing the rest away because they won't hold or just break in half. Monoprice, please change the recipe!
I tried using in cold weather to put up Christmas lights, they snapped as soon as i tried to bend them, it was about 8 degrees. I own an automotive shop, the techs wont use them because they have had so many fail. We threw them all away, had about ten packages, so no big loss. They may be ok for non critical jobs, but I won't be using them.
The cable tie mounts are no better, i installed about 30 of them putting a home theater in an exercise room. The adhesive has failed on about half of them after 2 years. Obviously they are not using 3m tape!