Features: - Automatically fills primer tubes in seconds - Compatible with all progressive presses - Works with Large and Small primers - Who spends the money on a progressive press to sit there and slowly load primer tubes one primer at a time• Progressive presses are designed to load lots of ammunition quickly. That's why Frankford Arsenal designed the Vibra-Prime Automatic Primer Tube Filler. To save time. The Vibra-Prime can load 100 primers into a primer tube in a matter of seconds with its unique motorized agitation mechanism. Filled tubes are then easily transferred into any model progressive press tube. A set of simple universal tube adapters and the drop pin ensure efficient transfers. Runs on 2 AA batteries (not included). - Who spends the money on a progressive press to sit there and slowly load primer tubes one primer at a time• Progressive presses are designed to load lots of ammunition quickly. That's why Frankford Arsenal designed the Vibra-Prime Automatic Primer Tube Filler. To save time. The Vibra-Prime can load 100 primers into a primer tube in a matter of seconds with its unique motorized agitation mechanism. Filled tubes are then easily transferred into any model progressive press tube. A set of simple universal tube adapters and the drop pin ensure efficient transfers. Runs on 2 AA batteries (not included). Features: Automatically fills primer tubes in seconds. Compatible with all progressive presses. Works with Large and Small primers