The Neck/Shoulder Sizing Bushings are designed for Short Action Customs' Modular Sizing Dies, specifically for the .308 Winchester, with a diameter of 0.336".
They offer improved cartridge concentricity and reduced neck runout due to their new internal geometry.
Constructed from 17-4 H900 stainless steel with a heat treat finish, these bushings provide a smooth and slick surface for enhanced performance.