The copper cleaning brush in .40-.416 caliber (10 mm – 10.6 mm) is specially designed for the thorough cleaning of large-caliber handguns and rifles. The strong copper bristles reliably remove heavy deposits such as powder residues, metal abrasion or oil residues – with maximum barrel protection. The precise caliber adjustment guarantees even contact in the barrel and enables effective cleaning right down to the last corner. Ideal for demanding shooters who rely on reliable gun care.