World's fastest gun bore cleaner, Cleaning gun bores in as little as 10 seconds! Brushes and swabs your bore in one quick pass. Light and compact, no assembly required. Washable and reusable with built in bronze brushes. Main floss area has 160 times more surface cleaning area than a patch, and cleans like no other product. If desired, use a few drops of bore solvent or oil to increase the cleaning ability.