TEMCo WC0308-20 ft 4/0 Gauge AWG Welding Lead & Car Battery Cable Copper Wire BLACK | MADE IN USA 440 Max Amps (up to 50 feet), Rated up to 600 volts, -50C to +105C (-58F to +221F) TEMCo Easy-Flex has a rugged EPDM jacket and is highly flexible. Annealed 30 gauge bare copper conductor. Nominal OD: 0.686", Conductor stranding: 1950/30 Resistant to Cuts, Tears, Abrasion, Water, Oil, Grease and Flame. NEC article 630 electric welders, Meets SAE J1127 and ASTM B-172 standards. RoHS Compliant.