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Interesting how it burns when not confined. What is the formula on these? Is the fuel magnesium?

If you think about it who else but children would be attracted to those colors and shapes.
I think the advantage here is speed in production. You can load these quick and snap them together. I am...

These are not soft plastic as stated in one of the previous post.

Here is the video.

https://www.youtube.com/watch?v=-R317QmzSAY
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I just made this video now that you got me thinking about those firecrackers. Anyway care to speculate what the composition...