Awgem SK1 11000W Portable Spot Welder – 100 Gears, Auto/Foot Pedal, 0.1-0.3mm Welding. With 100 adjustable power levels via a rotary knob and dual operation modes, you can weld nickel-plated strip (0.25mm), steel (0.3mm), and iron (0.3mm) with ease.