RCBS Hand Priming Tool (90200)Priming cases with a hand priming tool can save valuable time. The RCBS Hand Priming Tool features a patented safety mechanism which separates the seating operation from the primer supply Virtually eliminating the possibility of tray detonation. Large and small primer plugs are included and the RCBS Hand Priming Tool can hold 100 primers in the primer tray eliminating down time refilling the tool. RCBS Shellholders are compatible but are not included