The Bore-Max Speed Brush is a component of the Bore-Max Speed Clean System for faster and easier bore cleaning.Carbon build-up not only affects performance and accuracy but also causes degradation of the bore. Carbon build-up also insulates the copper fouling in the bore making it difficult to dissolve and remove with bore solvent.Using a bore brush to remove this carbon build-up is the best way to tackle the job. In order to achieve maximize effectiveness there needs to be an optimal balance between bristle density and bristle flexibility.Having too few bristles is a waste of time and too many won't provide enough flexibility to navigate the lands and grooves of the bore.The bristle configuration of the Bore-Max Speed Brush provides maximum scrubbing density removing more carbon with each pass and getting maximum results faster.Features / SpecsManufacturer No. AVBMSB12GReal Avid Bore-Max Speed Brush12 Gauge2X More BristlesNickel Plated (Impervious to Solvents)