We all know how fireworks work, but if you've ever been curious as to what's on the inside, this video is one for you.

The guys from What's Inside? went out to the desert to fire off some big ass fireworks and while they were out there, they cut one of those bad boys up to take a look at what was inside. Hell, they even took time to set off 10,000 sparklers, because y'know - pyro.

Needless to say, but I'll say it anyway, don't try this at home.

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