The number of grams in an extra large assortment of fireworks can vary depending on the specific package and the individual items included in it. However, extra large assortments typically contain a large number of individual fireworks, ranging from small novelties to large cakes and canisters, and may include a mix of both safe and sane and more explosive fireworks. If you're looking for more specific information on the grams of fireworks in an extra large assortment, it's best to check the product description or packaging for details.