Having shotguns in various gauges helps improve your versatility to match every occasion. When it comes time to perform cleaning on your shotguns, don't think, just do. This kit helps reduce the strain of figuring out what cleaning kits you need because this kit services 3 popular shotgun chamberings, 12ga, 20ga, and 410 bore. Premier Handle (4) - 9" brass rods Brass adaptor Double end nylon brush (3) - bronze brushes with coated steel twists 12ga 20ga 410 Bore (3) - cotton mops 12ga 20ga 410 Bore Patch loop