Composition 55 Potassium nitrate 7 Sulfur 17 Charcoal (150 mesh) 4 Dextrin 4 Iron oxide (Red) 10 Aluminium (spherical, 325 mesh) 3 Magnalium (100-200 mesh)DescriptionComposition is used for comets, so must be pumped. Use 25% alcohol as solvent Source: Williams