... output current and voltage could be adjustable to satisfy different welding requirement-- automatic compensation for voltage fluctuation, can work normally ... earth clamp*1, gas regulator*1, grounding cable*3meters, cable joint*2, control cable*5meters, MIG torch*1, double drive wire feeder ... & Employees & QCBulk ProductionWidely Used In Industrial Field Inverter CO2 Gas-shielded Welding Machine NB-630