30-20 TC Neck Sizer Die Set by REDDING RELOADING PRODUCTS Neck die sets contain two dies. The neck (NK) resizing die contains a decapping rod assembly with a neck expander (size button). The seating die (ST) includes bullet guide and built in crimp ring and the proper seating plug. *Please note* All defective returns must be made through Redding directly. You can visit their website by Clicking Here or call them at (607) 753-3331.