The Portasol Pz50 Heat Shrink & Soldering Kit is designed for creating and protecting electrical connections, with a butane powered iron that can be used to solder and heat shrink. The kit comes with a range of heat shrink tubing in a range of colors and sizes ranging from 1.5mm to 15mm. The 50W butane-powered iron included in this kit is designed to provide fast and efficient heat, making it easy to solder anywhere and afterwards shrink the tubing down to the correct size. The iron comes with a 2.4mm DF soldering tip