RCBS Primer Pocket Brush Combo Reloading - Case Prep. This Primer Brush from RCBS Gear includes an accessory handle-2 and sm & lg primer pocket brushes providing you with the tool you need to have a successful day of saving money. Specifications for RCBS Primer Pocket Brush Combos: Manufacturer: RCBS Quantity: 1 Condition: New Fabric/Material: Steel Bristles Features of RCBS Primer Pocket Brush Combos Removes residue in primer pockets with couple of twists Stainless bristles and interchangeable mounts for large and small primer pockets Package Contents: RCBS Primer Pocket Brush Combos No-roll accessory handle RCBS 9575: Primer Pocket Brush Combo Reloading - Case Prep