20 gauge Primary Automotive Wire - Brown - 100 Ft. Spool. For general purpose automotive, marine, or other low voltage wiring requirement. 10 strands of 30 awg copper wire. 0.085 Nominal outside diameter. Brown PVC insulation with a temperature rating up to 176°F (80°C). Resists abrasion, acid, oil, and grease. 60 Volt use or less. RoHS Compliant and Made in America.