The flanging tool consists of a soldering iron and custom heating tips. The custom tips are ideally designed to apply heat to a squarely cut piece of tubing. As the tubing is heated it is formed into a flange that is ideally suited for sealing into Hamilton valves. The kit comes with 3 heating tips for 12, 18, and 22 gauge tubing as well as a tubing holder. These components are also available individually.