This is Bore Tech's original patch and solvent collection system that removes all the fuss and muss of cleaning far behind. The Patch Hog was invented to eliminate the mess and neutralize odors associated with cleaning firearms. With the Patch Hog you'll never touch a dirty patch again. Plus, say good bye to smelly trash cans. The Patch Hog simply slips over the muzzle of any firearm and fastens securely with a scratchresistant rubber washer. The star washer grips up to 2" dia. barrels, and fits over iron sights. Next, screw on a plastic soda or water bottle to the threaded end to catch your spent patches. Just unscrew the bottle from the Patch Hog and screw on the old lid w Mfg: Bore Tech