Dealglad Soldering Solder Iron Gas Blow Torch Gun Butane Cordless Refillable Pen Burner Lightweight and Portable item Cordless device, no electricity or batteries required for operation. Multi function 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 Portable pocket sized, lightweight and convenient.