This is 25 feet of silver plated copper wire with Kapton insulation. It has the natural color polyimide film insulation and then a very thin PTFE insulation over that. The outside PTFE insulation is white/violet. This is very sharp looking wire. This is 26 AWG stranded wire with 19 strands. This is a very high temp. wire. This is lighter and has a much smaller outside diameter than the same size with just PTFE insulation. It is not as flexible as PTFE. The outside diameter of this wire is 0.0310 inch (0.79mm)! This is very high quality mil. Spec. wire. This would be great for audio projects, ext. I Will ship Worldwide. Please check out my eBay store for much more silver PTFE wire. This is a 25 foot length of wire.