I've had quite a few patch (and normal) cables in the course of my 20 year career.....in fact, friends and family used to call me Paul cable Snow because I'd regularly forget to bring socks or underwear on holidays with me but have a suitcase full of electronics and cables. Anyway, these are some of the better ones. Sure, they probably wouldn't be enough for mystical audiophiles who swear by golden filament, hand-blessed snakes....but they're certainly enough to run between your fender, big muff and AC15. I'm often told I have sensitive ears and don't hear any bad artefacts from these - although they do sound clearer than what I was using before - some cheap-o patch cables I once stole from a venue as a teenager.
They're sturdy. I've already played a gig with them, dropped them out of a car and stood on them a bunch of times. No change to the construction or finish. They seem very well constructed and soldered, no real chance of them breaking (without excessive force being applied).
As a bonus comment, I like them visually.