You can twist bare copper buss wire easily with other strands for stronger connections.
PTFE Cable Wire 26 28 30 32 34 36 38 40AWG Flexible Tinned Copper Cable UL10064
Wire size specification: 26 28 30 32 34 36 38 40AWG. Conductor material: Tin plated copper wire. Colour: Green, Orange, Grey, Brown, Purple, Blue, Yellow, Red, White, Black.
