"I purchased a roll of that for a doorbell install.
What can I say, it's made by tower and does the job. Those who are experiencing difficulties with it breaking - I don't know how? I haven't had any issues. My guess would be that if your not careful with snips you may damage the copper ever so slightly which may lead to it breaking?
"The description doesn't state, but you get a 100m roll. More than you'll ever need unless you're installing bells for a living. The wire is two solid cores so not as flexible as some wires, and does seem to get tangled quite easily.
can't comment on performance or reliability until I actually get a bell connected to it :)"
"this wire looks OK until you use it. The wire is solid and very light gauge so when connecting it it breaks very easily. Every time I tightened the screws of my bell push they broke the wire. Get a heavier gauge wire if you want trouble free installation!"