Real Avid Smart Brush - 8 super scrubber gun brushes with integrated scrapers Designed from the ground up to do a better and faster job of cleaning guns. Micro bristles stay rigid under pressure providing superior scrubbing power. Four unique brush shapes with integrated scrapers are designed to specifically clean hard-to reach interior and exterior surfaces where carbon and gunk accumulate. 4 unique brush shapes in phosphor bronze Carbon busting micro bristles 4 scraper tips remove stubborn carbon & gunk Length 5-1/2in 4 unique brush shapes in nylon