This is 25 feet twisted pair of silver plated copper wire with kynar insulation. This is 26 AWG solid wire with 1 strand. This is very high quality mil. Spec. wire made by Gore. The Gore part number is MC2501SP-295 PRLS. The military number is 536621-0003. The OD of each wire is 0.0285 inch (0.73 mm). The colors are blue and white. This would be great for audio projects, ext. I Will ship Worldwide. This is a 25 foot length of wire.