Professional nylon rifle bore brushes designed specifically for 6.5mm/.25 caliber firearms with 8-32 male threading for secure attachment to cleaning rods.Nylon Rifle Bore Brush Set - 12 Pack6.5mm/.25 caliber compatibility8-32 male thread for standard cleaning rodsDurable nylon bristles for effective cleaningSafe for barrel rifling and bore surfacesDozen pack for long-term maintenanceEssential for proper rifle maintenance these nylon brushes effectively remove fouling and debris while protecting your barrel's rifling from damage that can occur with bronze brushes.