You light the end (with lighter or match) and it is similar to a small butane blow torch. Important note: it is pretty hard to use as a soldering iron, luckily we have more soldering irons.
You can use this as a wood burning pen also
Newtown Tool Library
https://www.newtown-tool-library.com
9 Constable Streethttps://www.newtown-tool-library.com
in between the playground and Newtown Library/Smart Newtown.
Wellington, 6021
New Zealand