RCBS 09578 Primer Pocket Brush Small Multi-Caliber Stainless Steel Bristles
https://www.tandktactical.com/shop/076683095787-rcbs-09578-primer-pocket-brush-small-multi-caliber-stainless-steel-bristles-1867
https://www.tandktactical.com/web/image/product.template/1867/image_1920?unique=fd9d6ed
RCBS's Primer Pocket Brush removes residue in primer pockets. It features stainless bristles and interchangeable mounts.