I purchased these to use in tidying up and organising my cables, and they have been perfect for the job.
The cable ties are sturdy and a good length. Being made entirely of the hook-&-loop material means that you don't have to worry about whether you have enough length on the strap to achieve adhesion. And 50 is a generous enough number that I have been able to organise my cables as well as a plethora of electrical cords around the house, and still have a few cable ties over.