come fare tag con estintore
https://www.youtube.com/watch?v=IBRfo8LCGHg&feature=player_embedded
https://www.youtube.com/watch?v=QK2oTJucXQU&feature=player_embedded
https://www.youtube.com/watch?v=FQxsHT53E88&feature=player_embedded...
a breve ne postero altri