Hoppe’s No. 9 BoreSnake enables fast bore cleaning of 20-gauge shotguns. One pass loosens large particles, scrubs out the remaining residue with a bronze brush, then swabs it all spotless with a cleaning area 160x larger than a standard patch. Add a few drops of Hoppe’s No. 9 Lubricating Oil or Elite Gun Oil and your gun is ready for storage. A brass weight on the pull cord is stamped with the size. The BoreSnake is reusable and machine washable.