The Sinclair Carbide Mandrel Kit includes Expander Die and precision ground Carbide Turning Mandrels in popular calibers for tight tolerances and concentricity.
Carbide mandrels provide increased lubricity, longevity, and resistance to galling compared to Stainless Steel.
Kits come with both Turning and Expander Mandrels in 22 Caliber, 6mm, 6.5mm, and 30 Caliber, each slightly under bullet diameter for setting neck tension.