Backpack Oxy-gasoline cutting system is a complete steel cutting system which contains every thing you need to cut steel, including one cutting torch assembly, different sizes of cutting nozzles, 6.8L carbon fibre-made oxygen cylinder, 1L explosion-proof gasoline tank, cutting twin-hose, one plastic carry case, one suit of tools required in operating it. We recommend this cutting system for short-term cutting where portability is very important. It has become an ideal emergent rescue outfit with following advantages: 1) 2 minutes to force an anti-intrusion door when somebody is trapped in a burning house 2) 7 seconds to cut off 20mm x 20mm steel bar 3) 1 minute to cut the six points fixing the safety grid of a window 4) strong portability. It is a specially & scientifically designed Oxy-gasoline Search & Rescue Outfit (i.e. in Fire-fighting Brigade), ideal steel cutting system for field-operation and high-lift operation.