The Oral-B Pro Cross Action toothbrush head features more than 2200 perfectly angled bristles to remove up to 100% more bacterial plaque for cleaner teeth & healthier gums vs. a manual toothbrush. Oral-B genuine brush heads are designed with new X-shape bristles that clean in areas that round ones cannot reach. Its brush head usage indicator turns bristles from green to yellow showing you when to change for 100% cleaning efficacy. Guaranteed fit with Oral-B electric rechargeable toothbrushes except Pulsonic & iO toothbrushes. Features: Removes up to 100% more bacterial plaque for cleaner teeth and healthier gums vs. a manual toothbrush Only genuine Oral-B brush heads feature X-shape bristles that clean in areas that regular ones cannot reach for optimal cleaning efficacy Oral-B Cross Action features unique 16° angled bristles to perfectly adapt to each tooth for deep cleaning Guaranteed fit with Oral-B electric rechargeable toothbrushes except Pulsonic & iO toothbrushes Brush head usag