Lyman Turbo Case Cleaning Media is a great choice for cleaning tarnished cases. A few hours in a tumbler and cases are clean, polished and ready to load. Note: All weights are nominal since this was packed as full as possible by volume. If it does not appear full it is because contents have settled during shipping and handling.Lyman Case Cleaning Media is the most effective choice for cleaning dirty and tarnished cases. A few hoursin a Lyman Turbo Tumbler and the cases will be clean, polished and ready for reloading. Specially Treated CorncobSpecifications and Features: Manufacturer Number: 7631394 Lyman Turbo Case cleaning media Specially treated corncob Six pound easy pour container