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. The brass weight on the end of the pull cord has the caliber of the Boresnake® stamped on it, so you always know which Boresnake® you're using. Just add Hoppe's No. 9 Cleaner and Oil or Boresnake® CLP to the head and tail of the Boresnake® and run it through your bore for a quick clean.