Gas Propane cylinder. Develops higher heat than propane. Suitable for welding. It produces a possible average temperature of 2,000ºC to 2,100ºC. It takes 5 to 10 sec to weld. Use only with torch for MAP-PRO or MAPP Contains 400g or 14.1 oz of MAP//Pro-Max gas (Propylene). The bottle is disposable. It produces a possible average temperature of 2,000ºC to 2,100ºC. It is used in the welding of metals with "hard" soldering (e.g. copper soldering) (Brazing) or with "soft" soldering (e.g. tin soldering) (Soldering) etc.