This precision component is designed for use in Redding Type S Neck Sizing Dies and Competition Neck Sizing Dies. The premium titanium nitride coating significantly reduces friction against your cartridge brass, enabling ultra-smooth sizing that extends the lifespan of your cases and minimizes the need for heavy lubrication. Precision reloaders use specific bushing diameters to fine-tune neck tension down to the thousandth of an inch, maximizing ammunition consistency and accuracy. [1]