Ewin Gas Blow Torch Soldering Solder Iron Gun Butane Cordless Welding Pen Burner Durable, safe and convenient Can be used as a gas blow torch or a soldering iron Cordless device, no electricity or batteries needed It can melt silver and gold solder, small brazing rods, and many other materials Ideal for light welding, repairs, soldering, jewelry making, hobbies, crafts, model making, etc.