Breakthrough Clean BT308PBCBAR Phosphorus Bronze Chamber Brush

Breakthrough Clean Phosphorus Bronze Bristles Chamber Brush has durable phosphor bronze bristles for effective cleaning without damaging your bore. The twisted brass core keeps brush rigid and has a deeper cleaning action than Nylon brushes. Standard #8-32 thread (standard shotgun #5/16-27 thread on .410/28g/20g/12g). One per package.