The Imperial Convenience-Pak contains both the Imperial Dry Neck Lube and the Imperial Application Media. The Application Media makes it easy to apply dry neck lube to case necks. Just dip the cartridge case neck into the ceramic media. The media consists of high density ceramic spheres that are pre-charged with Imperial Dry Neck Lube. The Dry Neck Lube reduces drag on both the die and size button and is used to replenish the Application Media.