The Starlight 37mm signaling round produce a mixed burst of firefly stars and regular stars when launched. These are complete rounds ready to launch, loaded in CNC machined aluminum casings and fully re-loadable with the 37MM Reloading  Kits. With each 3 Round Pack you receive 3 live rounds loaded in 3 aluminum casings. The casings alone are valued at $20 each when sold separately. Hang on and do not discard them!