The 100 Micro Cleaning Kit is designed for use on .17 through .22 caliber rim-fire, auto-loaders and air rifles. This kit includes a 34” small caliber Memory-Flex® rod with a forged brass slotted tip, .5oz. Otis O85® Ultra Bore® Solvent, small caliber patches, and a .17 caliber short bore brush. The micro kits contain the bare essentials needed to clean your firearm utilizing Otis's patented breech to muzzle cleaning method. Available for all types and calibers.