Professional welder with piezo electric ignition, adjustable flame, lock system for continuous flame. Allows optimal use even in the upside-down position. 7/16′ threaded connection. Ideal for strong and gentle braze welding. Supplied with burner suitable for braze welding of pipes up to 50 mm. Possibility to interchange 6 different burners not included in the package. Can be used with valved cartridges art. 581,581N.