Fully functional, but a little bit tight when applying labels underneath...
I bought a stack of these when I was wiring in my patchbays for the purpose of labelling all of my XLR connectors. Very handy that the Neutrik XLR connectors take the 6mm Brother label, but the only inconvenience is that these end up going on so tight that they squash the label out of the way in the process.
If anyone from Neutrik is reading this: please make these so they are not so incredibly tight!
Maybe I'm being a bit thick but these don't seem to work the way they seem like they should, which considering we're talking about a ring of plastic seems a bit ridiculous.
I bought a bunch of these to allow bespoke labelling on some mic cables I've made and they seem to be too narrow to do the job. They fit if your cable is very narrow gauge but are too small if you are using better quality cable.