World's fastest gun bore cleaner! No more cleaning rods, brushes, jags or patches! Fast compact way to clean handguns, rifles, and shotguns in the field, on the bench or in the shop. Initial floss, built-in brushes and main floss remove powder residue, metal fouling and hardened deposits. Cleans from the breech without disassembly; no debris in gun's action, no more broken rods or stuck patches. Washable and durable, use again and again. Compatible with most solvents and oils. Built-in phosphor bronze bore brushes won't harm sensitive rifling or crown.