SUPERIOR PLAQUE REMOVAL: electric toothbrush heads to remove up to 100% more plaque vs. a regular manual toothbrush.DEEP CLEANING: Floss Action toothbrush heads loosens plaque between teeth to provide a floss-like-clean for healthier gums vs a regular manual toothbrush, but does not replace flossing.MAX CLEAN BRISTLES: Max Clean Bristles change from green to yellow to signal when to change your electric toothbrush replacement brush heads to maximize your cleanTRUSTED BY DENTISTS: Oral-B is the #1 Dentist Recommended Toothbrush Brand Worldwide.COMPATIBILITY: Pack includes 6 Genuine Oral-B Floss Action replacement toothbrush heads, compatible with the Oral-B Pro, Smart, and Genius rechargeable toothbrush handles, and not compatible with Oral-B iO Series.