I bought allot of patch cables in different lengths as I was patching up my studio, I just didn't find it in my wallet to splurge on cabling nor the will or time soldering my own.
Now; if you leave these cables in and they work, you don't touch them or there cabling gets pulled or squeezed you are fine.
But, the mechanical sturdiness of the copper strands is very weak. I had two of them in a synthesizer that just happened to be up against the wall so the tele-jacks where softly pressed against the wall and the cable bent towards the patchbay. Not squashed or violently bent, just not straight and had a bit of mechanical movement. They are now breaking up the signal now and again if the cord moves.
Cheap but mechanically weak, that is something you have to be aware of when buying these - don't expect rugged use or general use. It sits best in a fixed installation without any physical stress on any part!