12 GA ChamberMate Chamber Brush The KleenBore Chambermate 12 Gauge brushes are a tapered heavy duty cleaning brush that are designed to clean out fouling such as excessive wad fouling and unburned powder from the chamber of 12 GA Shotguns. This brush is commonly used in conjunction with the KleenBore ChamberMate 12 GA tool #SC225. Features: Heavy-duty tapered phosphor bronze bristles Good for cleaning choke tubes, chamber, muzzle ports, forcing cones, and more Compatible with KleenBore ChamberMate Shotgun Cleaning Tool #5/16-27 American Std. Shotgun Threads Made in USA