A one pass solution, the bore snake Viper includes a bore guide for easier entry into the firearm bore and has 33% more scrubbing power than the original bore snake by using an additional integrated bronze brush to scrub out carbon fouling, while the tail clears the barrel of loose debris with a surface area 160x larger than a standard patch. The Hoppe's bore snake Viper now comes with a compact carrying case with a built in handle for easy storage between firearm cleanings. Hoppe's bore snake Viper den conveniently fits in a range bag or backpack to protect your bore snake brushes during transport. The lid of the snake den doubles as convenient pull handle that snaps into the clear case for storage..