The phosphor bronze brush from hoppe's provides a thorough multi-directional scrubbing action for cleaning lead carbon powder and other fouling from the bore of a rifle without causing damage to the rifling.*requires shotgun adapter to use with standard cleaning rods.Thread Pattern: 5-16"Type: Cleaning BrushSize: 20 GaQuantity: 10 PackBristle Type: Phosphor BronzeProtects: Against Carbon/Lead/Powder FoulingSuitable For: Shotguns