Pro-Shot Patriotic 12GA Nylon Bore Brush From Tactical to Practical, Pro-Shot is your one source for quality firearms cleaning products. This patriotic bore brush has stiff heavy duty red, white, and blue nylon bristles that will not flatten like standard brass bristle brushes and are resistant to ammonia oil based cleaners. It is made with solid brass core and coupling. Bore Brush Specifications and Features: Pro-Shot PS12 Red White and Blue Nylon Bristles 5/16x27 Threading Fits: 12 Gauge Shotgun Barrels