Hornady Full Length Sizing Dies features polished elliptical expanders that significantly reduce case neck stretch. The hardened steel decapping pin will not bend or break, even when depriming cases with a crimped primer pocket. The Full Length Sizer Die also features a Zip Spindle, a series of light threads cut on the spindle and spindle collet. This helps eliminate spindle slippage and makes tightening the spindle lock a breeze when making adjustments.