Redding dies are made of the finest alloy steels obtainable and machined on Hardinge Super- Precision lathes capable of holding the tightest tolerances in the industry. To maintain tolerances and guarantee that your dies will last a lifetime, all Redding dies are heat treated in atmospherically controlled furnaces. Finally, your 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 (sold separately). All Redding dies use the industry standard 7/8-14 threaded bodies. Die sets for straight wall cases contain three dies: a full length resizing die, an expander die with neck expanding plug, and seating die with built in crimp ring and the proper seating plug. Die sets for bottleneck cases contain two dies: a full length resizing die and seating die with built in crimp ring.