Measurement for tinned copper wires with extra flexibility is ≤0.5². For plain copper wires with extra flexibility, measurement is ≤0.5². The latter is in accordance with IEC 228/NC 32013 (Class 6).
These miniature special polymer for robotics feature color coded DIN 47100 or n°+Y/G. Several layers are stranded and wound by anti-friction tape. The polyurethane is low friction coefficient.