3/0ga silicone wire with custom crimped ends – Overkill Solar
Heavy Duty Natural Flexible PVC or Neoprene Rubber Welding Cable 3/0 4/0 AWG with Black or Orange Color - China Welding Cable 3/0AWG, Welding Cable 4/ 0AWG | Made-in-China.com
3/0 AWG Battery Cable, Sold per Foot up to 50', Black | West Marine