Rothenberger Industrial Soldering Irons Gas soldering iron 632328 - Rothenberger Industrial 35115, Rothenberger Industrial's gas soldering iron, the RO PEN, reaches temperatures up to 500 °C. This versatile tool is ideal for precision soldering tasks and small repairs. It is commonly used in electronics, plumbing, and jewellery making. Rothenberger 35115 RO PEN Gas Soldering Iron 500°C Transparent Tank