Iosso 19012 Eliminator Premium Bore Brush – 12 Gauge Shotgun Thicker, stiffer grade of fiber allows for back and forth action unlike traditional brass and bronze type brushes Wound tighter and has more fiber per inch than any other brush Use with the Iosso Bore Cleaner and Triple Action Solution to remove all ; copper, lead, plastic wad, and carbon burn Drastically reduces cleaning time and the result is an unbelievably clean bore Last approximately 8 to 10 times longer than other brushes