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