The Oral-B Pro Precision Clean brush head adapts perfectly to every tooth and removes up to 100% more plaque than a manual toothbrush. The original brush heads from Oral-B have been developed with new X-shaped bristles that can now clean areas that regular bristles cannot reach. The green indicator bristles turn yellow over time depending on individual usage, indicating the optimal time to replace the brush head for 100% cleaning power. Guaranteed to fit all Oral-B rechargeable toothbrushes, except for Pulsonic and iO.