Precise machining allows accurate reloading by offering easier adjustments, better alignment and smooth functioning. With one of the finest internal finishes in the industry, HornadyA(R) Custom Grade and Match Grade Dies provide a lifetime of reloading. They're so well crafted that they're guaranteed never to break or wear out from normal use. Hornady Custom-Grade New Dimension Dies are the most advanced reloading dies available today. The Zip Spindle design features a series of light threads cut on the spindle and spindle collet. This design eliminates spindle slippage and takes the knuckle busting out of tightening the spindle lock while making spindle adjustments a snap. Built-in crimper gives the option of crimping without the need for an extra crimp die. Guaranteed never to break or wear out for from normal use.