ChamberMate Shotgun Chamber Cleaning Tool, or Replacement Chamber Brush. ✔NEW ✔Low Price ✔U.S. Shipping ✔Authorized Dealer A rugged tool with a large, heavy-duty, tapered-nose brush to clean fouled chambers, forcing cones, ported barrels, and choke tubes. Designed specifically for 12-gauge or 20-gauge firearms (select gauge from drop-down menu), this ChamberMate model is a rugged shotgun cleaning tool with a strong aluminum rod and a T-shaped, sure grip handle. It features a heavy-duty phosphor bronze brush with a tapered nose to fit difficult-to-clean areas. This brush is great for cleaning powder and plastic fouling from chambers and choke areas. Replacement 12-gauge brush (5/16-27 threaded fitting) available separately (select from drop-down menu). NOTE: “Replacement Chamber Brush ONLY” Option does NOT include the Tool.