RCBS Expander/Decapping Assembly Features The RCBS Expander/Decapping Assembly is built as a direct factory replacement part which ensures a perfect fit and proper function in compatible RCBS sizing dies. Precision machining on the expander rod expander ball and decapping pin keeps the assembly concentric which translates directly into consistent case neck tension and reliable bullet seating. The ultra-hard carbide expander button resists wear far better than standard steel buttons holding its dimensions over thousands of cycles of case preparation. This durability makes the assembly well suited to high-volume reloaders working with .17 caliber bottleneck cartridges. An adjustable positioning sleeve on the expander button gives reloaders control over exactly how the expander interacts with the case neck during the sizing stroke. The decapping pin punches out the spent primer cleanly as the case passes through the die a simple but essential step in every reloading cycle. Because dies see repeated wear from case after case having a spare decapping unit on hand prevents an unexpected failure from halting a reloading session. This RCBS Expander/Decapping Assembly is a practical precision-made component for any reloader working with .17 caliber cartridges. RCBS Expander/Decapping Assembly Specifications Manufacturer: RCBS Model: Expander/Decapping Assembly Caliber: .17 Cal Compatible Hosts: .17 Remington .17 Remington Fireball Material: Carbide Expander Button Available At: GrabAGun