1.This item is 2in1 welding machine (1 x Pedestal,1 x Handheld welding gun) 2.Jewelry welding machine can be used for fast welding of platinum, gold , K gold , silver, steel and precision welding of wires like ends of circle , oval buckle, fine wire. Argon can be accessed directly without soldering solder powder , solder joints are smooth and not black .