Tetra ProSmith Brass Core Bronze Brush (8/32 Thread) .357/.38/9mm
Tetra ProSmith Brass Core Bronze Brush (8/32 Thread) .357/.38/9mm, Tetra Gun ProSmith tightly wound precision brass core brushes effectively remove fouling from gun barrels. Industry standard 8-32 male thread (5-40 for .17 Cal. & .204 Cal.) 5/16-27 male thread (12, 20, 28 & 410 Gauge) Close tolerance specifications for perfect bore fit Will not harm or scratch steel Durable and reusable