Hoppe’s Boresnake Viper, the original one-pass bore cleaning tool. The BoreSnake Viper has 50% more scouring power than the Hoppe’s Original BoreSnake. Brand new in retail packaging, Hoppe’s BoreSnake Viper Den Cleaning Kit for 20 ga Shotguns. Features of the BoreSnake Viper Cleaning Kit: “The Hoppe’s Boresnake Viper takes the technology of the original Boresnake and increases the cleaning power by adding an additional set of brushes. This one-pass bore cleaning solution uses integrated bronze brushes to scrub out carbon fouling, while the tail clears the barrel of loose debris with a surface area 160x larger than a standard patch. It also has an integrated cone-shaped bore guide on the leading end and the brass weight has the caliber stamped on it. The Boresnake Viper Den now includes a T-Handle for easier pull through of your pistol and a reusable carrying case that you can keep in your range bag or backpack to protect your Boresnake Viper during transport.”Patented one-piece designHas 160x larger surface area than a standard patchConvenient new case for easy storage and transportLid doubles as a pull handleExtremely packable