Redding 3-Die Sets contain a full length sizing die, expander die, and bullet seating die. The steel full length sizing die features a decapping rod assembly with neck expander. Sizing lube (not included) will ensure smooth functioning. The expander die includes a neck expanding plug and the seating die features a built-in crimping ring and seating plug. This combination is sure to produce consistent, reliable ammunition time and time again. Shellholder sold separately.