The Hoppes Shotgun Boresnake is the fastest way to clean the bore of your gun. One pass through the bore loosens the large particles, it then scrubs out the remaining residue with the attached bronze brush. The rest swabs it all spotless with its cleaning area 160X larger than a standard patch. Boresnake Features Hoppes shotgun boresnake Bore cleaner Machine washable Hoppes\' Ref. MPN: HOBS12, HOBS16, HOBS20, HOBS28, HOBS410 Colour: Green Sizes: 12G, 16G, 20G, 28G, 410G PM Ref: 834208