The copper cleaning brush in .475-.50 caliber (12 mm – 12.7 mm) has been specially developed for powerful barrel cleaning of large-caliber weapons. With its sturdy, closely spaced copper bristles, it reliably removes even the most stubborn residues such as tombac, powder deposits or metal abrasion – without damaging the inside of the barrel. The precise caliber adjustment ensures full contact with the barrel wall and enables a particularly thorough cleaning effect for handguns, rifles or exotic large calibers.