Oral-B Aquafloss Nozzles help you create a custom clean with 2 stream styles when used with your Oral-B Water Flosser Advanced Portable Handle (not included). Choose from a Focused mode for targeted cleaning, or a Rotational mode for massaging the gums. Both streams clean deep between teeth and eliminate plaque bacteria for healthier gums. *Helps reduce plaque bacteria and inflammatory components associated with gingivitis, when used as an adjunct to brushing, flossing and regular professional care.