Deluxe Die Set for Bottleneck Cases Features The Deluxe Die Set for Bottleneck Cases contains everything you need to accurately reload a bottleneck case. You get a full-length die set which includes the full-length resizing die containing a decapping rod assembly with a neck expander (size button) as well as a seating die (ST) which includes a bullet guide built-in crimp ring and the proper seating plug. A neck (NK) sizing die is included in the deluxe set. Deluxe Die Set for Bottleneck Cases Specifications Neck resizing die Decapping rod Neck expander Seating die Fit: 6.5mm GAP 4S