A 500 Gram multi-shot aerial firework also known as a 500-gram cake is a multi-shot aerial firework in which pre-loaded tubes are arranged and fused internally. The “grams” are grams of pyrotechnic composition in the firework. The combined amount of composition in any single cake can total as much as 500 grams. In terms of weight of pyrotechnic composition, 500-gram cakes are the largest fireworks available to consumers in the United States.

500-gram cakes have soared in popularity because they are safe and easy to use. The user simply lights the one external fuse to unleash a series of shots. You can think of a 500-gram cake as fireworks show in a box. Just light the fuse, stand back, and enjoy the show. 500-gram cakes can contain as few as 8 or 9 shots, or as many as 200 shots. There are almost an unlimited number of dazzling effects that can be loaded into these cakes, making them the ideal item to feature when building your backyard fireworks show.