These are fine for what they're advertised as, and work well (as far as I can see).
However, even though they're long .... they could be a bit longer still. I have to admit I misread the details as 3 metre long cables, not 3, one metre cables. So, if they could add an extra metre it would be perfect for linking up modular gear with a synth, which can easily be more than a metre away, and believe me a metre is not very long in those situations.