The Lee Universal Case Feed magazine features 5 feed tubes, increases production rate and has been optimized for bottleneck cartridges. Built-in case gate prevents tipped cases. No adjustments, simply swap feed tube for different case length. Automates the case feeding operation on the APP, Deluxe APP, Pro 1000, Pro 4000 Kit | Auto Breech Lock Pro, Load-Master, and Six Pack Pro presses. Note: Consider the Universal Case Collator to rapidly refill your tubes (sold separately)