because not everybody knows what is meant, it is not a pure copper, but a cheap copper-aluminum alloy. At the weight you notice immediately how little copper this string contains. The then but to market with 100% CCF, as this is a sign of quality, is surpassed in audacity hardly. I can only hope that other laymen as I do not fall for it also. Unfortunately, I had already cut the cable, otherwise I would have returned it!