The Gunsmither Brush 'n Mop Chamber Tool is very handy for loosening and removing chamber fouling from your Ruger 10/22, Remington 597, Marlin 60, and many other semi- auto and lever action rifles, and many .22 semi- auto pistols as well. This little tool will keep your gun functioning at peak performance and promote better accuracy by keeping your chamber clean. One end has an Otis Bronze Chamber brush to loosen up fouling, and the other end has a .22 Bore Mop to wipe out residue loosened by the brush. Tool is about 8" in length, with comfortable Delrin handle for easy gripping. Easily fits in your Range Kit, or at your workbench.