The devil's in the snap. Throw them at the ground, stamp on them, lob them at your mates — they crack with a satisfying little pop every time. Classic throwdown novelty that's been entertaining people for decades.
Each box has 50 snaps wrapped in tissue paper and gravel. They're F1 classified, meaning anyone can buy them and they're about as safe as a firework product gets — 1g NEC total for the box. Perfect for kids, party bags, or just messing about on Bonfire Night.