Pulsefire PF-BACKPACK: Pulsefire backpack kit turns your handheld flamethrower into a professional controlled burn system. A 3.3-gallon reservoir supporting over 4 minutes of fuel means an incredibly high capacity for real-world use. If you held the trigger nonstop, it would yield over 4 minutes of use before running empty. The backpack is extremely manageable at only 26 lb with fuel. The slim design keeps the weight close and comfortable. This is the ultimate in controlled burn capability in a man-portable package. This package includes the 3.3-gallon tank, shoulder straps, hose assembly, copper seals, adapter fittings, and the user manual. You can feel at ease when purchasing Pulsefire with their lifetime warranty on materials and workmanship.