In reply to Removed Userherblai:
You can have mine if you collect them! (Joking, I still use them but only for winter now). The wires fray/break much more easily than any other nuts I've used, just at the tight bend after passing through the nut. Perhaps I'm unlucky, but I treat them the same as my WC and BD nuts (carefully, cleaned after sea cliffs etc), and they still fray. FWIW I bought them about 4 years ago, perhaps they've changed since then.