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 were developed with new X-shaped bristles, which now also clean the places that normal bristles cannot reach. The green indicator bristles turn yellow over time depending on the individual use and thus indicate the optimal time to change the plug brush - for 100% cleaning power. Guaranteed fit with all rechargeable toothbrushes from oral-B, except for Pulsonic and IO.