Brass-weighted, drop-through cord slips easily down the barrel; simply grasp and pull cord through the barrel; one pull through does it all. First, an initial floss area brushes the barrel and then removes loose grit and debris in the bore prior to the main scrubbing.  Finally, the main floss, with 160 times more cleaning area than a standard cleaning patch, scrubs the bore to a mirror-like finish. Lightweight, compact and easy to take to even the most remote hunting destination.  No exposed metal to damage rifling or barrel crown. No assembly required.  Solvent safe, washable and reusable hundreds of times.