Lock-N-Load Die Bushing 2 Per Pkg - 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.