Sherco Automotive & Marine Supplies Primary Wire for Automobiles and Electronic Projects. Gauge - 18 Gauge Outside Diamater - .091" Stranding - 16 x .010" Meterial - 100% CopperColors Available - Black, Blue, Brown, Green, Grey, Orange, Pink, Purple, Red, White, Yellow, Dark Blue, Dark Green, and Tan Choose from 3 Different Lengths - 25 FT Coil, 100 FT Spool, 500 FT Spool Made in USA Product Details - Stranded annealed, single conductor copper wire General purpose thermoplastic (GPT) insulation Recommended for trucks, tractors, cars, and general service For use at 60 volts or less Meets SAE J1128 specifications Temperature rating from -40 C (40 F) to 80 C (176 F) RoHS compliant