Maximize your reloading time with the Lock-N-Load quick change bushing system. The Lock-N-Load reloading system is a patented quick change bushing system that lets you change dies with a simple flick of the wrist. With Lock-N-Load technology in your reloading press, you can stop loading, change dies and start loading another caliber in seconds. This pack contains three Hornady Lock-N-Load Die Bushings.