As the title says, these patch cables are absolutely brilliant, they are slightly longer (double the length) as opposed to regular patch leads and are of much higher quality than those common multi colour ones you see around, at least I have broken way too many of those to want to keep buying them. These cables also have metal ends so should live much longer and if they ever were to break they can be dismattled and soldered quite easily, or if you want to get creative you could even replace the cable entirely and just use these quality metal ends.
However, this being a long term review of sorts as I bought these over a year ago I can safely say that these have lasted the distance (quite literally too). I bought them so I could move some pedals around for a specific setup I needed, however I ended up keeping them which at this price I didn't expect at all.
As for sound, they don't seem to degrade the signal at all to my ears and are well shielded enough to not pick up interference unlike those cheap cables you get included for free with some guitars and the likes.
So in conclusion at less than ¤4 they are well worth the money, great build quality, solid metal connectors and nice thick shielded cables. What more could you ask for?