Oral-B Pro Cross Blk Elec T/Brush Repl Heads 5 Pk 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.Removes up to 100% more bacterial plaque for cleaner teeth and healthier gums vs. a manual toothbrushOnly genuine Oral-B brush heads feature X-shape bristles that clean in areas that regular ones cannot reach for optimal cleaning efficacyOral-B Cross Action features unique 16° angled bristles to perfectly adapt to each tooth for deep cleaningGuaranteed fit with Oral-B electric rechargeable toothbrus