The Sinclair International dozen pack nylon pistol brush is engineered for precision cleaning of pistol bores, specifically designed to accommodate 10mm, .40 Cal and .41 Cal firearms. Each brush in this pack of 12 features a #8-32 male threaded end, ensuring compatibility with standard cleaning rods. Constructed with durable nylon bristles, these brushes provide effective removal of fouling and debris without damaging the bore surface. The robust design ensures longevity and consistent performance, making it an essential tool for maintaining the accuracy and reliability of your firearm.