Redding's Titanium Nitride Neck Bushings are heat treated steel bushings with a Titanium Nitride coating to enhance surface hardness and reduce sizing friction.
The bushings are available in a range from .185" through .368" in .001" increments, catering to various sizing needs.
The specific bushing size is indicated by the last three digits of the part number (#RD76XXX), with this particular bushing being .286 inches in diameter.