With Long life tip 1.Temperature range :300-450 degrees 2.Durable tip 3.Good appearance Outer heating Electric iron ,Specification , Rated Voltage ... damaged MAIINTENANCE , 1.During and after using , tin the tip with solder . The tip may oxidize and become hard to wet if it ... not file the long life soldering tip . If wettability is re-duced , clean the tip surface with fine gradesand paper .and tin it ...