The Breakthrough Clean Technologies® .40 Caliber & 10mm Bore Mop 100% Cotton Cleaning Swabs are soft, washable and effective in getting your bore clean. Standard #8-32 thread (standard shotgun #5/16-27 thread on 20g/12g). Available for most gauges and rifle calibers. Product Features • BORE CLEANER: Clean barrels shoot with more accuracy, & we help you obtain this by preserving & maintaining all of your firearms with a standard #8-32 threaded swab. It's gentle yet effective enough to remove exce
