that's a torch.. the kind like my buddy used.. not recommended for indoors but they also serve many purposes. I've done a few flat roofs in my time and they can really melt some rubber too.. encrypted-tbn3.gstatic.com/shopping?q=tbn:ANd9GcS-MJ9gf-4ZpzurjdGyj8m5zJ5Lvlia-2ZHwfYR39KllrrKCLdgjQEeZxuOcw