The Portasol Medium Power Soldering Iron, No. Pz50, is completely powered by butane and is ideal for electronics, maintenance, and repair. One butane tank will last up to 50 to 60 minutes at mid-setting. The tool is easy to use and provides 50 watts equivalent (fixed temperature). The ultrasonically welded gas tank provides a safe, reliable butane soldering iron, plus the short distance from the tip to the grip allows the technician closer access to the work surface. It comes fitted with a 2.4mm DF tip let and four additional tip lets, including 1mm, 3.2mm DF, 4.8mm Df, and hot knife tip lets.