The Comet signaling round produces a shower of sparks trailing a bright flare. Burns up to 400 ft. Loaded in CNC machined aluminum casings with powder sbushings. 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 rounds loaded in 3 aluminum casings. The casings alone are valued at $20 a piece when sold separately. Hang on and do not discard them!