Smarter Tools MIG135Kit Welding Kit Wide 20 - 135 Amp welding output range-Perfect for completing projects and repairs around the home, farm, shop, or basic auto-body welding Step-less wire speed control-More reliable welds Thermal overload protection-Ensures lasting performance for years to come Multiple voltage settings-For a variety of materials and thicknesses Tool-less Design-Easily change wire, drive rolls and polarity