Antex 120w gas powered soldering iron antex xg12p20 butane gas powered soldering iron fitted with a hot air tip and deflector the irons tough nylon body contains a gas reservoir which can hold sufficient fuel for approximately two hours continuous use before refilling with gas ignition by means of a built in piezo lighter the tip temperature is variable and regulated by a nylon gas flow adjuster at the base of the unit applications include heavy duty soldering localised brazing heat