This kit helps reduce the strain of figuring out what cleaning kits needed because this kit services 3popular shotgun chamberings, 12ga, 20ga, and 410 bore. Includes: 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