20 gauge Primary Automotive Wire - 1,000 Ft. Spool. Available in Black, Red, Blue, Green, Yellow, Brown and White. Copper core made up of 10 strands of 30 awg pure copper wire. Temperature rating up to 176°F (80°C). Voltage rating of 60 volts or less. Black PVC insulation is resistant to abrasion, grease, oil, and acid. RoHS compliant and Made in the USA.