RCBS Tungsten Coated Neck Sizing Bushings provide precise bullet tension without needing traditional lube, thanks to their Tungsten Disulfide coating.
These bushings are designed for use with RCBS Gold Medal Match neck sizing dies and require selecting the correct size for optimal alignment and tension.
To choose the right bushing size, measure the cartridge's outside neck diameter or the case's neck wall thickness and adjust as instructed for proper neck tension.