These pumps make four segments that, when assembled, make a star that has a break cavity like a crossette star, only bigger. The star segments are assembled in a group and wrapped with paper, leaving a cavity at one end for the initial burn. When the star leaves the shell, it burns into the 4 segments and break charge. What makes this different is that the segments can be different colors for effect. The largest pump (2½" in diameter) could be a good entry into the large comet competition at the convention--something I always wanted to do but never had the time. This would be a sure winner! The stars can go into any size shell.
