RCBS Steel Neck Bushings are interchangeable to let the reloader select a bushing that gives precisely the right amount of tension on the bullet when using RCBS Gold Medal Match sizing dies. Using a precisely fitted Steel Neck Bushing reduces work hardening of the case neck brass, prolonging case life and helping to improve accuracy. Self-centering for proper alignment with case neck For best results, the use of high-end brass with consistent neck thicknesses is recommended Bushings come "in-the-white" – bare steel – so traditional case lubrication is required For use ONLY with RCBS Gold Medal sizing dies RCBS recommends having neck bushings one t Mfg: Rcbs
