Sievert EU Powerjet Blowtorch With Interchangeable Burners, SI253511Sievert Powerjet Blowtorch With Interchangeable Burners Flexibility is the key word to describe the Sievert hand held torch system. These blowtorches provide everything the craftsman or discerning home handyman requires. With many unique features, these are the most advanced blowtorches for brazing or soft soldering, heat shrinking, heating and dismantling work. This Sievert Torch System operates on a number of fuels from propane, butane, Propane