Pro-Shot 12S Bore Brush 12 Gauge Shotgun #5/16-27 Thread Bronze Bristles Looped Tip Brass Core
https://www.tandktactical.com/shop/709779100361-pro-shot-12s-bore-brush-12-gauge-shotgun-5-16-27-thread-bronze-bristles-looped-tip-brass-core-1229
https://www.tandktactical.com/web/image/product.template/1229/image_1920?unique=3248b02
Pro-Shots bore brush is exceptional for bore cleaning and it will not harm the bore. This bore brush will fit all 12 gauge shotguns.
