This JT&T Products 160F 16 AWG Black Primary Wire is for standard original machinery and as a replacement on vehicular equipment. It features stranded, annealed single-conductor copper built within general purpose thermoplastic (GPT) insulation. This black electrical wire has a smooth surface that’s ideal for pulling through loom or JT&T Flex-Guard convoluted tubing. It is resistant to grease, oils and acids.