... type transformer electrode holder have others advantagesSuitable material: steel, copper, aluminium, nickel, molybdenum , tungaten, manganese, stainless steel ... range: transducer , LED and the other lead wire, copper coil and vamished wire, relay, watch, capacitancor slug and ... brace, electricity plug, sliver contact point and copper, lightning use tungsten material butt welding Inveter welding amchine ...