*** THESE BUSHINGS ARE PROPRIETARY TO SHORT ACTION CUSTOMS MODULAR SIZING DIES ONLY!  THEY WILL NOT WORK WITH ANY OTHER DIE *** Our “Neck / Shoulder Bushings” are precision machined and matched to size the Shoulder / Body Radius, Shoulder, Neck / Shoulder Junction and the Neck of your cartridge. These neck / shoulder bushings feature our traditional tapered design similar to standard neck bushings.  This helps ensure that your ammo has the utmost concentricity possible. Made from 17-4 H1150 Stainless steel then nitrided to ensure great lubricity