Gravity feed Beer Line Cleaning Kit. Easy to use instructions included. Featuring 8 ounce bag of "Brew Clean" - a safe, and easy powered form cleaner. Bottle is marked in both ounces and mL.Ball Lifter for holding check valve ball on beer coupler (tap) open so liquid can pass through beer coupler (no need to remove like some cleaning kits). Plastic connection for connecting the cleaning line directly to the tower or standard shank. High quality faucet brush is included.