Re-loadable shells remain among the most popular consumer fireworks devices available to the public. There are two types of shells - ball shells and canister shells. Balls shells produce spherical effects and generally contain up to 32 grams of composition per shell. Canister shells are typically much more powerful, containing a maximum amount of 60 grams of composition. The trick is to get those 60 grams well compressed and balanced between lift and break charges to produce the maximum effect of display in the sky. All of our shells are extensively scrutinized during the production process to ensure the largest breaks in the consumer industry.