500 Gram Fireworks is a multi-shot firework that consists of multiple tubes, connected with fuse. Also known as 500 gram cakes and finale’s.
9 on a boards and no-abs also fall in to the 500 gram fireworks category. They tend to have the biggest because their are 9 large shots vs 20 shots so the smaller the shot count the bigger the boom and vice versa. The longest duration cakes will also be here. Along with the zippers large shot count cakes that go out hurry but blaze the sky.
500 grams is the amount of powder in the combined tubes making up the cake. This is the largest gram count a consumer firework is allowed by federal law.