A spherical or cylindrical shell with a hard paper casing containing stars and/or small effects (including crackle, whistle or reports), and a burst charge with a lift charge to propel the shell into the air.
Learn how to safely set up and ignite a Shell
https://www.youtube.com/watch?v=Hde9xmv-i7Q&t=4s
English
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CNFA Fireworks Safety PSA
Safety First! Fireworks with a Spike
Safety First! Fireworks Without a Base
Safety First! Fireworks with a Base
French
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Safety First! Fireworks with no Base - Francais
Safety First! Fireworks with a Spike - Francais
Safety First! Fireworks with a Base - Francais
Safety First! Wheels - Francais