Hoppe's BoreSnake is the fastest bore cleaner on the planet. 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.Specifications and Features: Hoppe's .338, .340 caliber rifle, den Hoppe's den lid doubles as a pull handle Convenient new case for easy storage and Transport Hoppe's den includes the original boresnake