The Hornady M-1 Case Tumbler is designed to quickly clean and polish reloading brass. This case tumbler uses cyclonic and vibratory action to shine and clean brass cases for more consistent quality control, while an included sifter easily separates the polished brass from the media. The M-1 tumbler is designed to clean large quantities of brass to save time and can hold up to 400 .38 special cases, 180 30-06 cases, or the equivalent amount of similarly-sized cases. Improve the quality of your reloaded ammunition with the Hornady M-1 Case Tumbler.