The description of these is missing one measurement. The minimum diameter wire that it will hold snug onto.

I bought these to identify all the wires to my home alarm system so I could have the electronics repaired. However, many of the wires are to small of diameter to hold the tiewrap snuggly.

I measured it, and 5 mm is the smallest diameter that it can wrap tightly.

These work great for labeling that mess of cords! I've used them behind the TV to label which cord is going to what component which makes life easier when I have to replace a cord or troubleshoot something.