Frankford Arsenal Vibra Prime is redesigned and made for small to large primers. The design is innovative, making reloading easier and faster. With a motorized agitation mechanism, primers are vibrated in the tray, working them into the tubes in just seconds. Once done, primers can be transferred into any model of progressive tube by using the two universal tube adapters included with the purchase. This Frankford device operates on two AA batteries and also comes with a primer tray, one small and one larger tube, and prime tube filler. Manufactured by a top-rated company, many reloaders have confidence in this product.