The RCBS Universal Hand Priming tool is an excellent hand priming tool for the reloaders looking to get maximum sensitivity and feel from their hand priming units. This tool uses a universal shellplate which will accept virtually any case from the tiny 32 ACP to the large 45-70 Government, eliminating the hassle and expense of using shellholder. The tool also features a patented safety gate which helps to isolate the primer seating operation from the primer supply virtually eliminating the possibility of tray detonation. The removable primer tray correctly positions the primers before they are seated and will work with any manufacturers primer packaging. Notes: Works with all brands of large and small rifle and pistol primers