Uniweld’s HT44 Twister®2 Self Igniting Hand Torch eliminates the need for a flint lighter and is used for soft soldering and brazing of copper, brass, and aluminum. Lightweight and portable, the HT44 can be operated with propane or propylene. If using propane, the HT44 allows the user to soft solder up to 3 inches of copper tubing and silver solder up to 1 inch of tubing. If using propylene, the HT44 allows the user to soft solder up to 3.5 inches and silver solder up to 1.75 inches of tubing. Other features of the HT44 include a trigger lock with instant safety release, full size comfort grip, 360° swivel tip, and can be operated in any position, even upside down.