The Weller ML500MP mini soldering iron is lightweight and compact, making it a great portable option for your day to day repairs and work. The ML500MP has a continuous run time of 30-minutes and has an adjustable gas flow valve. This mini soldering iron can also work as a mini-torch when the tip is removed. In the soldering industry, the name Weller carries a lot of weight. Carl Weller patented the first hand-soldering tool to heat and cool rapidly in 1941. Weller Manufacturing Company was founded in 1945 as a family partnership near Philadelphia, Pennsylvania, USA. Over the years, manufacturers of many types of products from televisions to washing machines came to rely on Weller for its quality and reliability. Today Weller tools play a role in the manufacture of electronics innovations around the world.