Copper cable ) 99.78% at a purity of 99.78% 0.30mm, 0.25mm, 0.20mmWeight/spool: 3 kg, 5 kg, 7 kg, 15 kg, 20kgTensile strength: 1000 N/mm2, 900 N/mm2, 500 N/mm2, 450 N/mm2, N/mm2Min:99.78%Maxcopper:99.9%carbon:0.03%Coblet<o,001Iron:0.005%rus:>0,01%sulr:<0,01%zinc:0,003%