Those fireworks are way bigger than what we we have here in the USA. The biggest firework we COULD buy was an M-80. It was 1.5" long and 9/16" in diameter. You can buy novelty M-80s now, but they have .05 grams of explosive vs the 3 grams in the old ones.
They look big an dangerous, but there is really only a little bit of black powder in them, right in the middle of the stick. The rest is filled with some red dust like material, which is non flammable.