Ensure fresh-tasting beer from your kegerator with this kegerator cleaning kit. The check ball lifter is inserted into the bottom of the coupler probe which lifts the ball check valve. This allows cleaning solution to flow through the coupler to clean your system, removing beer stones and bacteria, mold and yeast build-up from your beer lines, faucet and keg coupler. Kit includes an 1-qt. shatter-proof cleaning bottle, a 1/2-lb. bag of powder beer line cleaning compound, a 5/8" nylon faucet brush, a check ball lifter and a neoprene coupling washer.