100 foot spool of 4-0 AWG black battery cable made from 19 x 108 strands of true 30 gauge copper conductor wire covered in a durable, high temperature resistant Black PVC insulation with a nominal outside diameter of 0.760 inches. Rated for use up to 60 volts, the 30 gauge copper stranding is highly conductive maximizing current flow while still being flexible. Ideal for connecting batteries, starters, amplifiers, and for solar use. Meets SAE J1127 specifications. Temperature rated from -50°C to 105°C (-58°F to 221°F). Made in the USA. RoHS Compliant.