The .27 Cal & Larger Brush Adapter is designed for use with copper eliminator cleaning rods providing secure attachment for cleaning brushes on .27 caliber and larger firearms..27 Cal & Larger Brush AdapterCompatible with copper eliminator cleaning rodsDesigned for .27 caliber and larger bore sizesEssential firearm cleaning accessorySecure brush attachment systemPerfect for maintaining rifles and larger caliber firearms this adapter ensures proper cleaning brush alignment and secure connection during copper fouling removal and routine barrel maintenance.