This convenient tool cleans from Breech-to-Muzzle in one quick and easy pass. The molded rubberized core and Nomex® fibers together create an effective way to trap and remove fouling. Available in .223 cal/5.56mm, .308cal/7.62mm, 9mm, .45 cal, and .40 cal, .243 cal/6.5mm, .270 cal/6.8mm, 12 gauge. Heat Resistant Outer Layer Made of heat resistant synthetic fibers (Nomex®); the same material used in the protective gear trusted by firefighters, racecar drivers, and the U.S. Military. Heat resistant up to 700° F so you can be sure this cleaning product won’t melt in your barrel. Rigid, durable materials trap foulng better than nylon products Nomex® acts as both a brush to loosen and a patch to capture fouling particles Molded Rubberized Core Keeps the Nomex®cleaning surface pressed against the bore ensuring an aggressive 360° clean. Helix shape engages the rifling tjrough the length of the barrel Threaded Ends Coated solid brass won’t scratch or damage the bore Safe for all firearms 8-32 standard threads to accomadate additional cleaning components, if desired Safe obstruction removal for jammed cases and other blockages Smart Gun Care For proper cleaning, insert the longer, narrower end in the chamber and feed out the muzzle. Pull through from Breech-to-Muzzle®. Repeat as needed. Use only for caliber specified.