Lee ram prime primes on the press up-stroke for a more sensitive feel.It includes easy to change punches for both large and small primers.The ram prime fits all brands of presses.This is same tool supplied with the hand press kit and uses the universal shell holders.Capacity: 1Type: Priming ToolCaliber: Pistol/RifleSize: UniversalQuantity: 1Weight: 20 ozFunction: Installs PrimerCompatible With: Single Stage PressesMaterial: SteelIncludes: Primer Guides/Shell Holder/Universal RamFinish: SilverMedia Type: Primers