This Small Caliber Cleaning System was designed for use on .17 caliber through .22 caliber rim-fire, center-fire and air rifles. Now, limited breech autoloader rifles and pistols can be cleaned from Breech-to-Muzzle without disassembly. As wax from lead bullets can build up, it is essential to clean .22 rim-fires from Breech-to-Muzzle in the natural direction of the bullet, paying special attention to the chamber. This kit includes two .17 caliber Memory-Flex cleaning rods, a .17 caliber T-handle, small caliber patches, airgun cable thread connector, .17 and .22 caliber short brushes, and a .5oz. tube of Otis O85 Ultra Bore Solvent. Using the all-in-one solvent, you can now clean, lubricate, and protect your firearm in one step. Enjoy your next venture and shoot like an Olympian with Otis' Small Caliber Cleaning System!