Nylon bristle brush perfect for cleaning all .58 cal muskets. The nylon is a little more forgiving on the metal of the barrel but still gets all the powder residue out. Includes an adapter for fitting on the ramrod. We recommend, however, using our cleaning rod for heavy musket cleaning to insure that the ramrod does not get stuck in the barrel. DO NOT put a cleaning patch over the brush and run it down your barrel as it may cause your cleaning/ramrod to get stuck.