Professional, clean gas with a very high calorific value / performance so that a given repair can be accomplished much faster than using contaminated and weak propane-butane; the repair area may be heated directly with MAP gas as it does not contaminate the surface, even with treatment materials (no charred traces). The combustion temperature is over 2000 degrees, so in many applications it can replace acetylene. Cylinders are easily interchangeable, you do not need to use any tools to screw it on the burner . The bottle weighs a total of 850g, so it is handy and you can have it even in hard to reach areas or when working at heights pinned to a belt. One cylinder is sufficient, depending on the torch and tip for 3 h. work time. The cylinder pressure is 30 atm, which makes it the most efficient gas available in the market.