These soldering irons are very light, making them perfect for younger students. Unlike a conventional mains iron which heats up persistently, this one has a touch-switch to activate, and it rapidly heats in just 15 seconds, and you’re ready to solder. when you take your finger off the touch switch or put the soldering iron down, it automaticlly shuts of. (remember to tin the tip before use) (10651 revitaliser/cleaner/tinner)