SUPERIOR PLAQUE REMOVAL: Perfectly angled electric toothbrush heads to remove up to 100% more plaque vs. a regular manual toothbrush.PROFESSIONALLY INSPIRED DESIGN: Round toothbrush head is inspired by dental professional tools for a tooth-by-tooth clean, with specially engineered bristles for optimal tooth coverage.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 Cross Action replacement toothbrush heads, compatible with the Oral-B Pro, Smart, and Genius rechargeable toothbrush handles, and not compatible with Oral-B iO Series.