Otis Technology Mongoose Dual Technology Cleaning Brushes are the quick-clean dual-function cleaning brushes that work great for impromptu weapon maintenance at home or on the range. Otis Technology has combined two steps of weapon maintenance into one by combining a brass brush with a cotton swab to form one tool: the Mongoose. Attain Otis' Breech-to-Muzzle cleaning methodology in one step by using a Otis Tech Mongoose Brush and Swab on your .17 to .40 caliber weapon. Tufcor proprietary wire on these cleaning tools resists corrosion and powers through the toughest buildup for a quick, agile clean that takes substantially less time to use than multi-step cleaning kits. With a standard 8-32 thread, Mongoose cleaning brushes fit on most standard cleaning rods. This Otis Technology cleaning kit comes in .40, .17, .25, .30, and .38 caliber varieties, and each kit comes with five Mongoose cleaning brushes. For a more efficient method of cleaning the bore, chamber, and other essential parts of your rifles and pistols, use the Otis Tech Mongoose Dual Function Cleaning Brushes.