This comprehensive AR-15 Cleaning Brush Kit includes four essential brushes designed for precision cleaning of your rifle. Made from distinctive blue fiber material that is thick stiff and maintains its shape for effective cleaning action.AR-15 4-Piece Cleaning Brush KitUpper Receiver Brush for thorough cleaningBolt Carrier Brush for maintenanceChamber Brush for precision cleaning.223 Bore Brush for barrel cleaningBlue fiber construction - superior to traditional brass and bronze brushesSized to close tolerance for precision fitReusable design allows multiple cleaning sessionsPerfect for AR-15 maintenance and cleaning this kit provides all the specialized brushes needed to keep your rifle in optimal condition. The durable blue fiber material allows for effective back-and-forth cleaning action.