The Redding Seating Die includes bullet guide, built-in crimp ring and the proper seating plug. All dies are made using the finest alloy steels obtainable and machined on Hardinge Super-Precision lathes capable of holding the tightest tolerances in the industry. Heat treated in atmospherically controlled furnaces and hand polished for smooth, flawless functioning, these dies will maintain tolerances and last a lifetime. Inspected and ultrasonically cleaned before packaging. Mfg: Redding