Lock-N-Load bushings are the easiest way to get the most out of your reloading press. Hornadys Lock-N-Load quick change bushing system is strong and simple to use. The Lock-N-Load concept is based on the positive locking action of the bolt action rifle. Once dies are adjusted for loading, these settings are locked in place on the die bushing with the dies lock ring. By keeping the die in the die bushing, it remains set for future loading and removal with a simple twist. These bushings also will fit other reloading presses using a 1-1/4" 12 thread.