The Ball Star nozzle pad is the portion of the machine that dispenses the cleaning liquid evenly during the cleaning and polishing process. Should your old nozzle pad wear out and need replacement, this is the part you need. Replacement is a breeze! The Ball Star Automatic Billiard Ball Cleaner is the best way to keep your pool balls looking new, and to reduce wear on your pool table cloth. Available for the old style round machine or the new Ballstar Pro machine.