The Hornady Custom Grade New Dimension 4-Die Set includes the Full-Length Sizer Die, Expander Die, Seater Die, and Crimp die. The Full Length Sizer Die features a Zip Spindle design with a series of light threads cut on the spindle and spindle collet. This design eliminates spindle slippage and makes tightening the spindle lock easier when making adjustments. The Seater Die is designed with a floating bullet seater alignment sleeve and seating stem that aligns the bullet with the case. Built-in crimper gives the option of crimping without the need for an extra crimp die. Shellholder sold separately.