Die sets for straight wall cases contain three dies. This is necessary because it is not possible to full length resize straight wall cases and expand the neck for proper bullet fit in one operation. The full length (FL) resizing die contains a decapping rod assembly. The expander die (EXP) contains a neck expanding plug. The seating die (ST) includes bullet guide, built-in crimp ring and the proper seating plug. Series C dies are less popular than the die sets listed in Series A & B. Redding uses the finest alloy steels obtainable. Redding dies are machined on Hardinge Super- Precision lathes capable of holding the tightest tolerances in the industry. This allows Redding to guarantee that they will produce ammunition that will properly fit any standard (SAAMI) chamber, regardless of action type. To maintain tolerances and guarantee that your dies will last a lifetime, all Redding dies are heat treated in atmospherically controlled furnaces. Finally, Redding dies are hand polished for smooth, flawless functioning, go through final inspection, and are ultrasonically cleaned and packaged. The die box is a handy cartridge loading block and storage package. Inside is a spare decapping pin, hex wrench, and even a place for your shellholder! All Redding dies use the industry standard 7/8-14 threaded bodies.