I wouldn't use them for anything important. I'm not sure if it's actually nylon. They break in half when you bend them. Real nylon cannot break like this. 50% of them will break the latch in their heads as soon as you insert the zip ties. In my experience, the failure rate was around 66% before the zip tie was in its final position. I have purchased several Home Depot HDX ties and have had no failures. I was able to bend the HDX in half and they didn't break. I also gave 1 star for ease of use just because I didn't want anyone to think there was anything good about this product. Made in China, but not because they're junk.
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