... in cold welding of various non-ferrous wires. 2.welding with no heat, no power 3. weld electrical cable, wire, brass SZ ... -5.5mm2.Machine Structure: Spheroidal Graphite cast iron3.Advantages:No power, no change of the resistance, clean, light, easy to operate ... , if you want to weld 0.8mm, 1.2mm, 2.0mm, 3.0mm copper wire, you can choose our model SZ-3T, or ...