Tumbler: The 1200 drive system has a beefed up suspension system and built in "exciters" for better tumbling action and faster case cleaning. The drive system has improved air flow for cooling and guaranteed longer motor life. Combined with their anti-rotation pad mounts the 1200 Classic runs smoother, quieter and better that never before. Auto flow: models automatically separate clean cases from media by using the units normal vibrating motion. Once the cases are clean, the user. Magnum Tumbler: To meet the special needs of the high volume reloaders Lyman offers their large capacity 2500 Pro Magnum model. Auto flo tumbler: For reloaders seeking the ultimate in case cleaning convenience, only Lyman offers the patented "Auto-Flo" system. Auto-Flo models automatically separate clen cases from media by using the units normal vibrating motion. When cases are clean, the user simply pulls the drain plug and the media drains from the exit port into the media drain pan(included).