Cable, Copper Welding in 25/35/50/70mm diameters - Hi-Flex Black PVC Copper Cable. Highly-flexible, black PVC single-insulated cable ( 70mm double insulated ). CE approved. Manufactured in Europe. Meets IEEE requirements. To IEC 60332-1. True copper weight and performance to EN60228 – 3525015/3540017/3540018/3540022