The oil brush in the .38-.45 caliber range (9 mm – 11.5 mm) is ideal for the barrel-friendly aftercare of handguns, revolvers and PCCs. It distributes gun oil or preservative evenly in the barrel and thus reliably protects against corrosion. The soft, non-abrasive brush material ensures gentle treatment of the inner surfaces – without any scratches. Perfect for use after cleaning or for regular care with frequent use.