Such model is manufactured with the best quality materials and tested with extreme accuracy, all this in order to give to the final user the immediate feeling he has Purchased one of the absolute best piece of equipment available on the market. The frame of this torch is completely realized in brass, each single connection between tap and body extension is threaded and brazed with silver Ag45 alloy. Burner head and air mixer are easily substitutable in case of necessity to change or ware housing diameter.