Oral-B Pro C/Actn Tbrsh/Hds Elec Black 2 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.Safety InformationPeriodically check the entire product/cords/accessories for damage. A damaged or non-functioning unit should no longer be used. If the product/ cords/accessories are damaged, take it to an Oral-B Service Centre. Do not modify or repair the product. This may cause fire, electric shock or injury. Usage by children under age 3 is not recommended. Toothbrushes can be used by children