These heat-treated steel bushings are precision-engineered to provide superior performance and durability. The sizing diameters are hand-polished to a surface hardness of Rc 60-62, reducing the effort required for sizing while ensuring smooth, consistent results. Comes in a wide range of sizes from .185 inches to .368 inches in .001 inches increments, these bushings cater to a variety of reloading needs. The last three digits of the part number (#RD73XXX) indicate the specific bushing size, allowing you to select the perfect fit for your reloading process. Built to last and designed for accuracy, these bushings are an essential tool for precision reloading.