4 Gauge 4 AWG 25 Feet Red + 25 Feet Black ( 50 Feet Total ) Welding Battery Pure Copper Flexible Cable Wire -- Car, Inverter, RV, Solar by WindyNation 4 AWG (4 Gauge) cable. Please refer to the photo gallery for a technical specification chart (amperage, voltage, stranding, insulation and copper thickness, etc.) High grade EPDM insulation jacket: Resistant to tears, cuts, abrasion, water moisture, and oil based solvents High stranding cable count combined with EPDM insulation results in a very flexible cable Rated up to 600 volts, -50C to +105C (-58F to +221F). Pure copper cable. Copper cable is fully annealed per ASTM standards Made in the USA. Complies with SAE J1127. IEC and RoHS compliant.