Allen 70585: The revolutionary BORE-NADO barrel cleaning rope makes taking care of your firearm easy. Simply add a solvent of your choiceto the cleaning rope and clean from breach to muzzle in a single stroke, repeating as necessary until clean. The small end of the rope has a weighted brass bore guide to make guiding the rope through your firearms barrel easy. The vortex bristle technology uses copper brushes to clean fouling and carbon as it passes through your barrel and the built-in braided swab sweeps it away.