The Hornady Custom Grade New Dimension 3-Die Set is a great die set for the avid reloader. The 3-die set is designed for straight-walled cases. The set includes CGND Full Length Sizer Die, CGND Expander Die, and CGND Seater Die. The Full Length Sizer Die features a Zip Spindle, with a series of light threads cut on the spindle and spindle collet. This is designed to eliminate spindle slippage and makes tightening the spindle lock a breeze when making adjustments. The CGND Seater Die is designed with a floating bullet seater alignment sleeve and seating stem that aligns the bullet with the case, to improve bullet seating and accuracy.