Breakthrough Clean Phosphor Bronze Brush 357/38/9MM 8-32 Bronze Bronze Brush This Durable Phosphorous Bronze bristled Brush Is For Effective Cleaning Without Damaging Your Bore. The Twisted Brass Core keeps Brush Rigid And Has a deeper Cleaning Action Than Nylon Brushes. The Brush Has a Standard #8-32 Thread. Bristle Type: Bronze Material: Bronze Thread Pattern: 8-32
