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.This model features a female end.Thread Pattern: #8-32Type: Cleaning BrushSize: 17 CalQuantity: 10 PackBristle Type: Phosphor BronzeProtects: Against Carbon/Lead/Powder FoulingSuitable For: Rifles